4x3+2x2-80x/2x

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Solution for 4x3+2x2-80x/2x equation: 


x in (-oo:+oo)

4*x^3+2*x^2-(((80*x)/2)*x) = 0

4*x^3+2*x^2-40*x^2 = 0

4*x^3-38*x^2 = 0

2*x^2*(2*x-19) = 0

2*x-19 = 0 // + 19

2*x = 19 // : 2

x = 19/2

2*x^2 = 0

2*x^2 = 0 // : 2

x^2 = 0

x = 0

x in { 19/2, 0 }

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