Question 1075643
4x^4+11x^2=3
4x^4 + 11x^2 -3 = 0
(4x^2 - 1)*(x^2 + 3) = 0
x^2 = 1/4
x = -1/2, 1/2
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x^2 = -3
x = -sqrt(3)i, sqrt(3)i