Question

How do you Factor 2x^4+x^2-6

Answer 1

Use u subsitution
u=x²

2u²+u-6
now do ac method
2 times -6=-12
what 2 numbers multiply to -12 and add to get 1
-3 and 4
split the middle temr like that
2u²+4u-3u-6
group
(2u²+4u)+(-3u-6)
factor
2u(u+2)+(-3)(u+2)
undistribue
(2u-3)(u+2)

u=x²
(2x²-3)(x²+2)

Answer 2

(2x^2-3)(x^2+2)
this is the answer