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#551 2014-09-15 19:12:40

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

I would do it like this:


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.

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#552 2014-09-16 01:15:49

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

3x^2x+4 - 3x ^x+2 = 0
With this,  how would you have solved it if you don't want to move 3x^x+2 to the RHS?


I know only one thing - that is that I know nothing

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#553 2014-09-16 01:19:51

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

You mean if you did not want to equate coefficients?


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.

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#554 2014-09-16 02:08:02

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Couldn't you have removed the 3's without moving 3^x+2 to the RHS?


I know only one thing - that is that I know nothing

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#555 2014-09-16 02:10:15

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

You could have used the quadratic idea.


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.

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#556 2014-09-16 02:20:40

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Quadratic idea? I see.
See what I mean;

3^2x+4 - 3^x+2 = 0

When you were solving you moved 3^x+2 to the RHS, and I am saying,  in case you did not want to move 3^x+2 to the RHS how would you have equated the exponents?

Last edited by EbenezerSon (2014-09-16 02:24:09)


I know only one thing - that is that I know nothing

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#557 2014-09-16 04:26:56

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

That I do not know.


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.

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#558 2014-09-16 04:30:26

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Simplify the following:

Why do you not want to move it?


“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.

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#559 2014-09-16 10:53:46

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

anonimnystefy wrote:

Why do you not want to move it?

Co's I have solved similar  problems which I did not move any to RHS and then went on to solve the exponents after I have gotten rid of the bases

Last edited by EbenezerSon (2014-09-16 10:54:46)


I know only one thing - that is that I know nothing

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#560 2014-09-16 11:17:08

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: Simplify the following:

I don't think that is possible here.

Have an example?


“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.

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#561 2014-09-16 11:25:01

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

Either way it is not difficult to move it to the otherside.

You can also solve as a quadratic like before.


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.

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#562 2014-09-17 04:56:21

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

anonimnystefy wrote:

Have an example?

The examples are not in the book I am using currently, but I will search for that particular book and then show you those examples.
Thanks Anonym


I know only one thing - that is that I know nothing

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#563 2014-09-17 05:03:13

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Thank you Bobbym!

Please these are confusing me;

(1)(x - m/g - f)^2
are the above the same as;

(2)x^2 - m^2/g^2- f^2

Please, confirm

Last edited by EbenezerSon (2014-09-18 01:35:47)


I know only one thing - that is that I know nothing

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#564 2014-09-17 06:50:34

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

Is this what the problem is?


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.

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#565 2014-09-18 01:46:44

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Regarding #1 the 'x' minus 'm' are all on one plateform,  and the 'g' minus 'f' are the denominator

With respect to #2 the 'x' is squared and the 'm' is also squared a minus sign is in between,  and  are on one plateform which is over 'g' squared minus 'f' squared.

And my question is, are both #1 and #2 the same expression?

Last edited by EbenezerSon (2014-09-18 01:48:07)


I know only one thing - that is that I know nothing

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#566 2014-09-18 03:14:03

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

Hi;

I hope you are not saying


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.

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#567 2014-09-18 05:23:21

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Yes,  that is it!

And are they the same expression?


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#568 2014-09-18 05:57:23

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

They are not and you can prove that by choosing two arbitrary numbers and substituting.


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.

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#569 2014-09-18 08:46:09

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

I was thinking they're the same, because according to the laws of exponents (ab)^2 is the same as (a^2^b2)
Is evident that the square(2) is multiplied to the variables. What do you say?


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#570 2014-09-18 09:22:16

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

But (a + b)^2 does not equal (a^2 + b^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.

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#571 2014-09-18 09:47:54

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

I see the difference now!

Thank you!


I know only one thing - that is that I know nothing

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#572 2014-09-18 10:01:13

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Is 27^(n+2) the same as 9^(n+2)  3^(n+2)?, If so I tried multiplying the latter expression back, but didn't get the former.

Please help with these.
Thank you

Last edited by EbenezerSon (2014-09-18 11:09:31)


I know only one thing - that is that I know nothing

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#573 2014-09-18 12:54:40

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

Hi;

Yes, that is true.


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.

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#574 2014-09-18 22:11:54

EbenezerSon
Member
Registered: 2013-07-04
Posts: 554

Re: Simplify the following:

Please have you tried multiplying 9^(n+2) 3^(n+2) back to get 27^(n+2)? And was it possible for you?

Last edited by EbenezerSon (2014-09-18 22:13:00)


I know only one thing - that is that I know nothing

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#575 2014-09-19 01:01:52

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Simplify the following:

First change it so they are all powers of 3.


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.

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