X^2-1/2X-5

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Solution for X^2-1/2X-5 equation: 


X in (-oo:+oo)

X^2-((1/2)*X)-5 = 0

X^2+(-1/2)*X-5 = 0

X^2-1/2*X-5 = 0

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

DELTA = 81/4

DELTA > 0

X = ((81/4)^(1/2)+1/2)/(1*2) or X = (1/2-(81/4)^(1/2))/(1*2)

X = 5/2 or X = -2

X in { -2, 5/2 }

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