Question

x^6 - 28x^3 + 27 = 0


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Answer 1

x⁶ - 28x³ + 27 = 0

x³            + 27

x³              + 1

27x³ + x³ = 28x³

(x³ + 27)(x³ + 1) = 0

x³ + 27 = 0             x³ + 1 = 0

x³ = -27                  x³ = -1

∛x³ =  ∛-27            ∛x³ =  ∛-1

x = -3                       x  = -1

Eternamente axllxa