81=x^(9/4)

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Solution for 81=x^(9/4) equation: 


D( x )

x < 0

x < 0

x in <0:+oo)

81 = x^(9/4) // - x^(9/4)

81-x^(9/4) = 0

-1*x^(9/4) = -81 // : -1

x^(9/4) = 81

x^(9/4) = 81 // ^ 4

x^9 = 43046721 // ^ 1/9

x = 3*2187^(1/9)

x = 3*2187^(1/9)

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