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## #1 2014-01-22 03:16:44

bronxsystem
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### mixed fraction

Hey all

I can do most of these but cant get past this one for some reason.

=

but i get stuck here S: is this totally wrong?

with the other problems i was able to factor them then cancel out. But this one i keep getting to this point and get confused

Last edited by bronxsystem (2014-01-22 03:21:39)

## #2 2014-01-22 03:22:08

bobbym

Online

### Re: mixed fraction

Hi;

There are probably a couple of ways to get there:

1) Multiply top and bottom by a.

1) Multiply top and bottom by a2.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #3 2014-01-22 03:30:04

bronxsystem
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### Re: mixed fraction

from the last one? 1+a/a * a2/1-a2

multiply both by a?

## #4 2014-01-22 03:34:17

bobbym

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### Re: mixed fraction

Hi;

No, I was starting from the beginning.

Now you multiply top and bottom of that by a2.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #5 2014-01-22 03:52:58

bob bundy
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### Re: mixed fraction

hi

Is that a2 really

?

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

Nehushtan
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Hint:

## #7 2014-01-22 03:59:10

bobbym

Online

### Re: mixed fraction

Hi Bob;

Hmmm, that is probably true.

Latexify, latexify, latexify. Our lives are frittered away by ascii, latexify!

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #8 2014-01-22 04:03:59

bob bundy
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### Re: mixed fraction

Years of teaching pupils with squiggly writing.  I'm used to powers appearing in random places.

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #9 2014-01-22 04:05:12

bob bundy
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### Re: mixed fraction

By the way.  Who were you quoting with that latexify quote?

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #10 2014-01-22 04:08:00

bobbym

Online

### Re: mixed fraction

I was trying to quote Henry David Thorough. Got it backwards it seems.

#### HDT wrote:

Our life is frittered away by detail. Simplify, simplify, simplify! I say, let your affairs be as two or three, and not a hundred or a thousand; instead of a million count half a dozen, and keep your accounts on your thumb-nail.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #11 2014-01-22 04:09:15

bronxsystem
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### Re: mixed fraction

in the book it doesnt have the exponent it just says a2 but maybe its typo? omg >< i will retry

## #12 2014-01-22 04:15:41

bronxsystem
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### Re: mixed fraction

im sure its a typo because the 2 is after the a which does not conform with previous exercises.

i spent 2 hours on this :*( 2 hours 20 minutes

thanks all for help and very sorry for wasting everyones time.

Last edited by bronxsystem (2014-01-22 04:20:23)

## #13 2014-01-22 04:16:49

bobbym

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### Re: mixed fraction

If you follow Post #4 will get you there very easily.

But you will then notice that the book problem must be a typo. But if it is not then the answer is

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #14 2014-01-22 04:40:01

bronxsystem
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### Re: mixed fraction

the answer in book was in line with the typo

but thank you (: i will save this thread and review the problem assuming it was a2 and try work it out using your working (:

thanks thanks thanks

Last edited by bronxsystem (2014-01-22 04:40:24)

## #15 2014-01-22 04:46:32

bobbym

Online

### Re: mixed fraction

Hi;

Yes, that is more likely to be the problem. Review what has posted up above to get that answer.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.