x^9/20=8^-3

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


x in (-oo:+oo)

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

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

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

x^9 = 5/128

x^9 = 5/128 // ^ 1/9

x = (5/128)^(1/9)

x = (5/128)^(1/9)

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