sd2enickeCoolyn sd2enickeCoolyn

14-10-2016
Mathematics

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What are the real or imaginary solutions of the polynomial equation? x^3 = 216

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nicky207 nicky207

14-10-2016

x³ = 216
∛x³ = ∛216
x = 6

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soyrbto soyrbto

18-10-2016

x^3 = 216
this means that
x = 216^1/3
x = 6 (real solution)

x = -3 -3^(3/2)i (imaginary solution)
x = -3 +3^(3/2)i (imaginary solution)

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