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Posted by **racheal** on Tuesday, September 21, 2010 at 8:44am.

PLEASE HELP!!

x4-13X2+36

how DO YOU FACTOR THIS I TRIED EVERYTHING HELP!!!

- math-factoring -
**MathMate**, Tuesday, September 21, 2010 at 8:58amPut y=x²

then

x^{4}-13x²+36

=y²-13y+36

=y(y-9)-4(y-9)

=?

- math-factoring -
**racheal**, Tuesday, September 21, 2010 at 9:10amWhy didnt i think of that...GENIUS!!THANKS A MILLION TIMES!!

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