(x^(9/20))=8^(-3)

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Solution for (x^(9/20))=8^(-3) equation: 


D( x )

x < 0

x < 0

x in <0:+oo)

x^(9/20) = 8^-3 // - 8^-3

x^(9/20)-8^-3 = 0

1*x^(9/20) = 1/512 // : 1

x^(9/20) = 1/512

x^(9/20) = 1/512 // ^ 20

x^9 = 1/1532495540865888858358347027150309183618739122183602176 // ^ 1/9

x = 1/1048576

x = 1/1048576

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