Question

What are the real or imaginary solutions of the polynomials

x^4 -52x^2 + 576 = 0

A. No solution
B.-4,-6
D.-4,4,-6,6

Answer 1

\[x^4-52x^2+576=0\]
A. No solution
B.-4,-6
D.-4,4,-6,6

Answer 2

Ok I got it, it's D
(x+4)(x−4)(x+6)(x−6)=0
x+4=0 or x−4=0 or x+6=0 or x−6=0
x=−4 or x=4 or x=−6 or x=6
Answer: x=−4 or x=4 or x=−6 or x=6