# Math Help - Mixed Factors

1. ## Mixed Factors

I dont know how to do mixed factors what so ever, there is only one example in my text book but I dont know how to do the others.

These are some problems:

3p^2 - 3p - 36=

4a^3b + 8a^2b^2 - 2ab^2 =

*Note ^means: power of

2. I assume that you want to factorise them .

(1) $4a^3b+8a^2b^2-2ab^2$

$=2ab(2a^2+4ab-b)$

(2) $3p^2-3p-36$

$=3(p^2-p-12)$

$=3(p-4)(p+3)$

3. Originally Posted by Needhelpatmaths
I dont know how to do mixed factors what so ever, there is only one example in my text book but I dont know how to do the others.

These are some problems:

3p^2 - 3p - 36=

4a^3b + 8a^2b^2 - 2ab^2 =

*Note ^means: power of
$3(p^2-p-12)$

$

= 3(p^2+3p-4p-12)
$

$= 3 x(px(p+3) - 4x(p+3))$

$=3x(p-4)x(p+3)$
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Check this one again

4a^3b + 8a^2b^2 - 2ab^2

because it stops where Mathaddict did it