# Math Help - Factoring

1. ## Factoring

I kinda need help with this.

x^2 + 3x+ 2

ax^2 - 9ax + 18a

2. Originally Posted by lovestarwarz
I kinda need help with this.

x^2 + 3x+ 2

ax^2 - 9ax + 18a
$(x\pm\alpha)(x\pm\beta)$

$\alpha\cdot\beta=2$

$\alpha +\beta=3$

3. For the second, take out a common factor of $\displaystyle a$ first, then use the method dwsmith suggested.

4. Originally Posted by lovestarwarz
x^2 + 3x+ 2
is (x+a)(x+b) where a+b=3 and ab=2

Originally Posted by lovestarwarz
ax^2 - 9ax + 18a
Same goes here, just factor out 'a' first.

Mmk (: