(Y/2)^2=121

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Solution for (Y/2)^2=121 equation: 


Y in (-oo:+oo)

(Y/2)^2 = 121 // - 121

(Y/2)^2-121 = 0

1/4*Y^2 = 121 // : 1/4

Y^2 = 484

Y^2 = 484 // ^ 1/2

abs(Y) = 22

Y = 22 or Y = -22

Y in { 22, -22 }

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