y^3/2=4y

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Solution for y^3/2=4y equation: 


y in (-oo:+oo)

(y^3)/2 = 4*y // - 4*y

(y^3)/2-(4*y) = 0

(y^3)/2-4*y = 0

1/2*y^3-4*y = 0

y*(1/2*y^2-4) = 0

1/2*y^2 = 4 // : 1/2

y^2 = 8

y^2 = 8 // ^ 1/2

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

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

y = 0

y = 0

y in { 2*2^(1/2), -(2*2^(1/2)), 0 }

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