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

User Rob Szumlakowski
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8.5k points

2 Answers

4 votes
x³ = 216
∛x³ = ∛216
x = 6
User Cheng Zhang
by
8.5k points
2 votes
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)


User Ravi Mane
by
7.8k points
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