Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2011-01-30 01:00:00
Solve this equation!
{ 19^98+ (342)( 19^97 )}/19^99=?
Tell me how u did it
Last edited by Agnishom (2011-01-30 01:08:28)
'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 2011-01-30 01:05:33
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,583
Re: Solve this equation!
hi Agnishom
Did you mean
Looks like you can factorise 19^97 and cancel.
Bob 
Last edited by Bob (2011-01-30 01:08:31)
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
#3 2011-01-30 01:09:38
Re: Solve this equation!
Yes, I meant that. Please elaborate
'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 2011-01-30 01:14:21
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,583
Re: Solve this equation!
so
is a common factor to both terms on the top and the one on the bottom.
Extract this factor
cancel the powers of 19
I think you can finish it from there.
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
#5 2011-01-30 01:22:48
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,583
Re: Solve this equation!
You may find it useful to learn some Latex in order to make your posts look mathematical.
You start with square bracket math the the code then finish with square bracket /math
Without the square bracket bit here's what I did for the above.
\frac{(19^{98}+ 342\times 19^{97} )}{19^{99}}=?
The top post in the help me section will teach you how to do it.
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
#6 2011-01-30 01:47:26
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,861
Re: Solve this equation!
Hi Bob,
I got this:
(ie, from 342 = 18 x 19)...etc
I don't know how to express that in a better teaching form because I've forgotten everything I was taught at school! 
Last edited by phrontister (2011-01-30 01:53:00)
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson
Offline
#7 2011-01-30 01:53:55
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,583
Re: Solve this equation!
hi phrontister
Pretty much the same as mine.
I don't know how to express that in a better teaching form because I've forgotten everything I was taught at school!
Surely something must have stuck in there? You seem to be able to do multiplication, factorisation and addition. Didn't you learn that at school?
:)
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
#8 2011-01-30 01:56:42
- phrontister
- Real Member
- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,861
Re: Solve this equation!
Hi Bob,
I used "everything" loosely :) ...but it's largely true, nonetheless.
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson
Offline
#9 2011-01-30 02:05:57
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,583
Re: Solve this equation!
hi phrontister
Methinks thou dost be too modest.
I've just searched your posts. hhhhhhhmmmmmmmm
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
Pages: 1