-x^(2/3)=729

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Solution for -x^(2/3)=729 equation: 


x in (-oo:+oo)

(-x)^(2/3) = 729 // - 729

(-x)^(2/3)-729 = 0

1*x^(2/3) = 729 // : 1

x^(2/3) = 729

x^(2/3) = 729 // ^ 3

x^2 = 387420489 // ^ 1/2

abs(x) = 19683

x = 19683 or x = -19683

x in { 19683, -19683 }

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