Question 354693
Rational exponents 
x^(2/3)-2x^(1/3)-8=0 
Solve the equation
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Quadratic equation with variable x^(1/3).

Factor:
(x^(1/3)-4)(x^(1/3)+2) = 0

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x^(1/3) = 4 or x^(1/3) = -2
x = (4)^3 or x = (-2)^3
x = 84 or x = -8

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Cheers,
Stan H.