# How to factor 4th degree polynomials

• June 14th 2009, 05:01 PM
hypermonkee
How to factor 4th degree polynomials
How do you factor
x^4+2x^2-8=0 ?
• June 14th 2009, 05:10 PM
Jhevon
Quote:

Originally Posted by hypermonkee
How do you factor
x^4+2x^2-8=0 ?
let $a = x^2$, then you have
$a^2 + 2a - 8 = 0$