81=x^4/3

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Solution for 81=x^4/3 equation: 


x in (-oo:+oo)

81 = (x^4)/3 // - (x^4)/3

81-((x^4)/3) = 0

-1/3*x^4 = -81 // : -1/3

x^4 = 243

x^4 = 243 // ^ 1/4

abs(x) = 3*3^(1/4)

x = 3*3^(1/4) or x = -(3*3^(1/4))

x in { 3*3^(1/4), -(3*3^(1/4)) }

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