Asked by racheal

(test next period)
PLEASE HELP!!

x4-13X2+36

how DO YOU FACTOR THIS I TRIED EVERYTHING HELP!!!
Answered by MathMate
Put y=x²
then
x<sup>4</sup>-13x²+36
=y²-13y+36
=y(y-9)-4(y-9)
=?
Answered by racheal
Why didn't i think of that...GENIUS!!THANKS A MILLION TIMES!!