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#1 2014-01-21 04:16:44

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

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 (2014-01-21 04:21:39)

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#2 2014-01-21 04:22:08

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#3 2014-01-21 04:30:04

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

Re: mixed fraction

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

multiply both by a?

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#4 2014-01-21 04:34:17

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#5 2014-01-21 04:52:58

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,382

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

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#6 2014-01-21 04:58:45

Nehushtan
Member
From: London
Registered: 2013-03-09
Posts: 613
Website

Re: mixed fraction

Hint:


157 books currently added on Goodreads

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#7 2014-01-21 04:59:10

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#8 2014-01-21 05:03:59

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,382

Re: mixed fraction

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

Bob


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

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#9 2014-01-21 05:05:12

bob bundy
Moderator
Registered: 2010-06-20
Posts: 6,382

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

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#10 2014-01-21 05:08:00

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#11 2014-01-21 05:09:15

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

Re: mixed fraction

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

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#12 2014-01-21 05:15:41

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

Re: mixed fraction

02ae3b4a9ee3cfd8f0c854b534769eba.png

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 (2014-01-21 05:20:23)

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#13 2014-01-21 05:16:49

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

#14 2014-01-21 05:40:01

bronxsystem
Member
Registered: 2013-06-22
Posts: 63

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 (2014-01-21 05:40:24)

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#15 2014-01-21 05:46:32

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

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.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Online

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