y2=4/2

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Solution for y2=4/2 equation: 


y in (-oo:+oo)

y^2 = 4/2 // - 4/2

y^2-(4/2) = 0

y^2-2 = 0

1*y^2 = 2 // : 1

y^2 = 2

y^2 = 2 // ^ 1/2

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

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

y in { 2^(1/2), -2^(1/2) }

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