Posted by **Lena** on Thursday, January 24, 2008 at 7:43am.

when is partial factoring used?

- math -
**bobpursley**, Thursday, January 24, 2008 at 7:44am
When no other method helps you break up a complex polynomial?

- math -
**bobpursley**, Thursday, January 24, 2008 at 8:40am
x^2 + 12x + ? what is the ? to make a perfect square. Answer, half of 12, squared, or six squared, or ...

x^2+12x+36 makes a perfect square.

y= x^2+12x + 36 +23 -36 Notice we added 36 and subtracted 36 to keep it equal to y.

y= (x+6)^2 - 13

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