y^(1/2)=9

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Solution for y^(1/2)=9 equation: 


D( y )

y < 0

y < 0

y in <0:+oo)

y^(1/2) = 9 // - 9

y^(1/2)-9 = 0

1*y^(1/2) = 9 // : 1

y^(1/2) = 9

y^(1/2) = 9 // ^ 2

y = 81

y = 81

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