SOLUTION: Please help me solve for x. I keep getting stuck. f(x)= x^4+x^2-12.

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Question 131656: Please help me solve for x. I keep getting stuck.
f(x)= x^4+x^2-12.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)= x^4+x^2-12
=(x^2+4)(x^2-3)
Zeroes for x:
x^2=3
x=+-sqrt(3)
.
x^2=-4
x=+-sqrt(-4)
x=+-2i imaginary numbers.
.
Ed