Math Is Fun Forum

Mariner

Member

Registered: 2010-06-16

Posts: 35

algebraic fractions

6x+12 / 12x-9 X 16x^2-9 / (x+2)(x-3)

I need some help simplifying and multiplying this. I'm overlooking something but I can't tell what Could someone please help?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: algebraic fractions

Hi;

Is this what we are doing?

Did you factor all the numerators and the denominators so that cancelling is easy?

Can you finish up now?

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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.

Mariner

Member

Registered: 2010-06-16

Posts: 35

Re: algebraic fractions

Hi;

Is this what we are doing?

Did you factor all the numerators and the denominators so that cancelling is easy?

Correct. I'm practicing algebra that I haven't done for about 3 years now. I'm getting stuck with the 12x^2-9 part

Last edited by Mariner (2011-01-25 12:25:29)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: algebraic fractions

Please check the top post ( mine ) again, can you go from there?

---

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.

Mariner

Member

Registered: 2010-06-16

Posts: 35

Re: algebraic fractions

2(4x+3) / x-3 is the correct answer yes?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: algebraic fractions

Can you simplify that and please use parentheses like this:
(2(4x+3)) / ( x-3 ). That removes any ambiguity. Better more than less.
I know they are teaching you the way you are doing but they are teaching you wrong!

---

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.