Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1 2012-07-26 00:54:05
Factorise
Factorise this expression
P.S.:- Is the problem ill-posed? If so, what should be it actually?
P.P.S:- I just edited it
Last edited by Agnishom (2012-07-26 00:55:43)
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
Offline
#2 2012-07-26 01:34:15
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
Hi Agnishom;
perhaps?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3 2012-07-26 01:57:53
Re: Factorise
No, that would be very easy:
What else could it be?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
Offline
#4 2012-07-26 03:48:32
- debjit625
- Member
- Registered: 2012-07-23
- Posts: 101
Re: Factorise
No, that would be very easy:
What else could it be?
No that would be
BTW I didnt understood your main question...
Debjit Roy
___________________________________________________
The essence of mathematics lies in its freedom - Georg Cantor
Offline
#5 2012-07-26 03:59:28
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Factorise
I think he wants to factorise the expression in first post. 
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#6 2012-07-26 04:11:56
Re: Factorise
Ya debjit,
That was a very stupid mistake I just commited
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
Offline
#7 2012-07-26 05:27:40
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
Hi Agnishom;
I am not finding anything that sort of looks like your original expression. Are you sure their isn't more?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#8 2012-07-26 06:10:36
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Factorise
Hi Agnishom
Factors of that expression when factoring along x:http://www.wolframalpha.com/input/?i=so … %3D0+for+x
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#9 2012-07-26 06:16:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
I am afraid that will not be much help.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#10 2012-07-26 06:17:40
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Factorise
The factors along y area little prettier:
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#11 2012-07-26 06:21:29
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
I think he is looking for some form of his first post that factors a lot nicer than that. Unfortunately I have tried thousands with no results.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#12 2012-07-26 06:29:47
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Factorise
He's not gonna find them because there aren't any.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#13 2012-07-26 06:30:48
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
Poster #2 found this one:
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#14 2012-07-26 06:33:26
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Factorise
But that is not what the OP wanted.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#15 2012-07-26 06:34:54
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
I think it is. He did not say poster #2's answer was unwanted. He said he wanted one that was not as simple.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#16 2012-07-26 18:05:00
- debjit625
- Member
- Registered: 2012-07-23
- Posts: 101
Re: Factorise
Ya debjit,
That was a very stupid mistake I just commited
It happens to me also,I think all of us
think he wants to factorise the expression in first post.
Ya, I understood that one 
,but he said the question is ill posted and it could be any trinomial ,so what we are going to factorise?
Debjit Roy
___________________________________________________
The essence of mathematics lies in its freedom - Georg Cantor
Offline
#17 2012-07-26 22:38:05
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
It means looking for a suitable trinomial that yields a nice factorization. A computer search has not turned up anything.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#18 2012-07-26 22:52:20
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Factorise
Wait. The problem has now turned into finding a trinomial with a nice factorization? 
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#19 2012-07-26 22:55:56
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
I think that is what he is asking.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#20 2012-07-27 00:32:49
Re: Factorise
Actually, one of my friends asked me to solve 3 problems which his teacher gave him and he could not solve(There are a lot of people like this who ask me to solve Problems). So, I decided to help him and I took the paper from him but since his handwriting was very bad, I could not read the factorisation problem accurately(or may be he has copied it wrong).
There was no problem with the other two problems which I could solve myself
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
Offline
#21 2012-07-27 03:20:12
- debjit625
- Member
- Registered: 2012-07-23
- Posts: 101
Re: Factorise
If you could tell us which grade your friend is in ,then we might guess a suitable trinomial as per the academic standards. Could you post the picture of the questions we might understand his handwriting.
Good Luck
Debjit Roy
___________________________________________________
The essence of mathematics lies in its freedom - Georg Cantor
Offline
#22 2012-07-27 03:20:18
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,648
Re: Factorise
hi Agnishom,
In which case (and assuming his teacher expected him to be capable of doing it), I suggest:
It's the closest I can get using some of the algebra he (maybe) gave you.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
Offline
#23 2012-07-27 03:27:30
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
I still think poster #2 hit the head on the nail. Just change every 3 to a 2.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#24 2012-07-27 03:30:15
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,648
Re: Factorise
Yes, that could be it. I've noticed before that you often agree with that guy.
I'm worried about your head though.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
Offline
#25 2012-07-27 03:32:01
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Factorise
Me too, the heat is shrinking it!
Shown actual size. Hair looks good.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline