Question
Factor x^4+2x^2-8
Answer
Let p = x^2
The original expression is converted to
x^4+2x^2-8
=p^2+2p-8
=(p+4)(p-2)
Substitute p yields result
(x^2+4)(x^2-2)
Factor x^4+2x^2-8
Let p = x^2
The original expression is converted to
x^4+2x^2-8
=p^2+2p-8
=(p+4)(p-2)
Substitute p yields result
(x^2+4)(x^2-2)