Asked by Terri
x^4 + 2x^2 + 1 = 0
(x^2)^2 +2x^2 +1 = 0
(x^2 + 1)^2 = 0
I don't know where to go now although I know the answer is
x = i, -i
(x^2)^2 +2x^2 +1 = 0
(x^2 + 1)^2 = 0
I don't know where to go now although I know the answer is
x = i, -i
Answers
Answered by
comet
x^2+1=0
x^2=-1 in real numbers it cant be.
so x=i and x=-i (solution in the set of complex numbers)
x^2=-1 in real numbers it cant be.
so x=i and x=-i (solution in the set of complex numbers)
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