x^4=18/81

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Solution for x^4=18/81 equation: 


x in (-oo:+oo)

x^4 = 18/81 // - 18/81

x^4-(18/81) = 0

x^4-2/9 = 0

1*x^4 = 2/9 // : 1

x^4 = 2/9

x^4 = 2/9 // ^ 1/4

abs(x) = (2/9)^(1/4)

x = (2/9)^(1/4) or x = -(2/9)^(1/4)

x in { (2/9)^(1/4), -(2/9)^(1/4) }

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