(3x^2+12x-15)*1/3x

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Solution for (3x^2+12x-15)*1/3x equation: 


x in (-oo:+oo)

x*((1*(3*x^2+12*x-15))/3) = 0

x*((3*x^2+12*x-15)/3) = 0

(x*(3*x^2+12*x-15))/3 = 0

3*x^2+12*x-15 = 0

3*(x^2+4*x-5) = 0

x^2+4*x-5 = 0

DELTA = 4^2-(-5*1*4)

DELTA = 36

DELTA > 0

x = (36^(1/2)-4)/(1*2) or x = (-36^(1/2)-4)/(1*2)

x = 1 or x = -5

3*(x+5)*(x-1) = 0

x*(x+5)*(x-1) = 0

( x+5 )

x+5 = 0 // - 5

x = -5

( x-1 )

x-1 = 0 // + 1

x = 1

( x )

x = 0

x in { -5, 1, 0 }

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