81=x^1/2

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Solution for 81=x^1/2 equation: 


x in (-oo:+oo)

81 = (x^1)/2 // - (x^1)/2

81-((x^1)/2) = 0

81-(x/2) = 0

81-1/2*x = 0 // - 81

-1/2*x = -81 // : -1/2

x = -81/(-1/2)

x = 162

x = 162

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