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15-11-2017
Mathematics

contestada

find the real or imaginary solutions by factoring
x^4-8x^2=-16

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15-11-2017

x^4 - 8x^2 + 16 = 0
(x^2 - 4)(x^2 - 4) = 0

x^2 - 4 = 0
x= +2 , -2

Solution is x = 2 (duplicity 2) and x = -2 (duplicity 2)

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