a^2 (b-c) -16b^2 (b-c)

i tried to combine like this

a^2b - a^2c - 16b^3 - 16b^2 c

i don't think this is right.

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- Jun 28th 2007, 01:59 PMbeautifulhere is another problem that i stuck on
a^2 (b-c) -16b^2 (b-c)

i tried to combine like this

a^2b - a^2c - 16b^3 - 16b^2 c

i don't think this is right. - Jun 28th 2007, 02:26 PMCaptainBlack
- Jun 28th 2007, 08:58 PMred_dog
If you want to factorize the expression, then here it is:

$\displaystyle a^2(b-c)-16b^2(b-c)=(b-c)(a^2-16b^2)=(b-c)(a-4b)(a+4b)$