# Thread: help with math question plz

1. ## help with math question plz

i have attached the question, thx much appreciated

2. ## Re: help with math question plz

What is the question, to simplify it?

3. ## Re: help with math question plz

Originally Posted by si2136
What is the question, to simplify it?
I have attached it below

4. ## Re: help with math question plz

You notice that:

$a^3+b^3 = (a+b)(a^2-ab+b^2)$

Therefore given expression

$= \frac {(a^2) + (a-b)(a+b) + (a^2-ab+b^2)}{a^3 + b^3} = \frac {3a^2 - ab}{a^3 + b^3}$

5. ## Re: help with math question plz

Originally Posted by Drongoski
You notice that:

$a^3+b^3 = (a+b)(a^2-ab+b^2)$

Therefore given expression

$= \frac {(a^2) + (a-b)(a+b) + (a^2-ab+b^2)}{a^3 + b^3} = \frac {3a^2 - ab}{a^3 + b^3}$
Thank you

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