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Posted by **Camile** on Friday, September 16, 2011 at 7:13pm.

1) a^3 - 3a^2 + 3a - 9

2) 2x^2 - 3x^2 - 4x + 6

- Math -
**Reiny**, Friday, September 16, 2011 at 11:20pmuse grouping

the first:

a^3 - 3a^2 + 3a - 9

= a^2(a - 3) + 3(a - 3)

= (a - 3)(a^2 + 3)

do the 2nd the same way.

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