Question

How to factorize this?

Answer 1

http://newton.matem.unam.mx:8080/ejercicios/factorizacion/p0712.gif

Answer 2

\[x ^{4}-69x ^{2}+36\]

Answer 3

assume \[y=x^2\]

Answer 4

hint : split -69x^2 as -81x^2+12x^2

Answer 5

then the eaquation would be
\[y^2-69y+36=0\] solve for y then find x :)

Answer 6

Still dont get it. How can I solve y in that one? There are no two numbers that multiplied are36and added -69

Answer 7

use hartnn hint

Answer 8

\[x ^{4}-81x ^{2}+12x ^{2}+36\]

Answer 9

\[x^2(x^2+9)(x^2-9)+12(x^2+9)-72=x^2(x^2+9)(x^2-9)-9^2 \]