2x^2-x-15/9-x^2

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Solution for 2x^2-x-15/9-x^2 equation: 


x in (-oo:+oo)

2*x^2-x^2-x-(15/9) = 0

2*x^2-x^2-x-5/3 = 0

x^2-x-5/3 = 0

DELTA = (-1)^2-(-5/3*1*4)

DELTA = 23/3

DELTA > 0

x = ((23/3)^(1/2)+1)/(1*2) or x = (1-(23/3)^(1/2))/(1*2)

x = ((23/3)^(1/2)+1)/2 or x = (1-(23/3)^(1/2))/2

x in { (1-(23/3)^(1/2))/2, ((23/3)^(1/2)+1)/2 }

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