4y^3-(9/2)y

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Solution for 4y^3-(9/2)y equation: 


y in (-oo:+oo)

4*y^3-((9/2)*y) = 0

4*y^3+(-9/2)*y = 0

4*y^3-9/2*y = 0

y*(4*y^2-9/2) = 0

4*y^2 = 9/2 // : 4

y^2 = 9/8

y^2 = 9/8 // ^ 1/2

abs(y) = (9/8)^(1/2)

y = (9/8)^(1/2) or y = -(9/8)^(1/2)

y = 0

y = 0

y in { (9/8)^(1/2), -(9/8)^(1/2), 0 }

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