1/2x^2-3/4x-9/4

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Solution for 1/2x^2-3/4x-9/4 equation: 


x in (-oo:+oo)

(1/2)*x^2-((3/4)*x)-(9/4) = 0

(1/2)*x^2+(-3/4)*x-9/4 = 0

1/2*x^2-3/4*x-9/4 = 0

DELTA = (-3/4)^2-(-9/4*1/2*4)

DELTA = 81/16

DELTA > 0

x = ((81/16)^(1/2)+3/4)/(1/2*2) or x = (3/4-(81/16)^(1/2))/(1/2*2)

x = 3 or x = -3/2

x in { -3/2, 3 }

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