x^2-5/2x-39/15

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Solution for x^2-5/2x-39/15 equation: 


x in (-oo:+oo)

x^2-((5/2)*x)-(39/15) = 0

x^2+(-5/2)*x-13/5 = 0

x^2-5/2*x-13/5 = 0

DELTA = (-5/2)^2-(-13/5*1*4)

DELTA = 333/20

DELTA > 0

x = ((333/20)^(1/2)+5/2)/(1*2) or x = (5/2-(333/20)^(1/2))/(1*2)

x = ((333/20)^(1/2)+5/2)/2 or x = (5/2-(333/20)^(1/2))/2

x in { (5/2-(333/20)^(1/2))/2, ((333/20)^(1/2)+5/2)/2 }

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