Question 595516
i would like to know the steps to solve the equation x^4-3x^2-4=0 
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It can be factored.
{{{x^4-3x^2-4 = (x^2-4)*(x^2+1) = 0}}}
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{{{x^2 - 4 = 0}}}
x = -2, +2
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{{{x^2 + 1 = 0}}}
x = -i, +i