120-4(x)-(3/6)*x^2=0

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Solution for 120-4(x)-(3/6)*x^2=0 equation: 


x in (-oo:+oo)

120-((3/6)*x^2)-(4*x) = 0

(-1/2)*x^2-4*x+120 = 0

120-1/2*x^2-4*x = 0

DELTA = (-4)^2-(-1/2*4*120)

DELTA = 256

DELTA > 0

x = (256^(1/2)+4)/(-1/2*2) or x = (4-256^(1/2))/(-1/2*2)

x = -20 or x = 12

x in { -20, 12 }

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