9/16x^2-2x-1

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Solution for 9/16x^2-2x-1 equation: 


x in (-oo:+oo)

(9/16)*x^2-(2*x)-1 = 0

(9/16)*x^2-2*x-1 = 0

9/16*x^2-2*x-1 = 0

DELTA = (-2)^2-(-1*9/16*4)

DELTA = 25/4

DELTA > 0

x = ((25/4)^(1/2)+2)/(9/16*2) or x = (2-(25/4)^(1/2))/(9/16*2)

x = 4 or x = -4/9

x in { -4/9, 4 }

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