SOLUTION: Please help x+2= cubert(12x+8) thank you
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Question 47053
:
Please help
x+2= cubert(12x+8)
thank you
Answer by
Nate(3500)
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x + 2 = cubed root (12x + 8)
(x + 2)(x + 2)(x + 2) = 12x + 8
(x^2 + 4x + 4)(x + 2) = 12x + 8
x^3 + 4x^2 + 4x + 2x^2 + 8x + 8 = 12x + 8
x^3 + 6x^2 = 0
x^2(x + 6) = 0
x = 0 and x = -6