Solve for xxx: x4−5x2+4=0x^4 - 5x^2 + 4 = 0x4−5x2+4=0.
1,−1,2,−21, -1, 2, -21,−1,2,−2
1,41, 41,4
1,−1,4,−41, -1, 4, -41,−1,4,−4
000