c^2+9c+20/5c-10

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Solution for c^2+9c+20/5c-10 equation: 


c in (-oo:+oo)

c^2+9*c+(20/5)*c-10 = 0

c^2+13*c-10 = 0

DELTA = 13^2-(-10*1*4)

DELTA = 209

DELTA > 0

c = (209^(1/2)-13)/(1*2) or c = (-209^(1/2)-13)/(1*2)

c = (209^(1/2)-13)/2 or c = (-(209^(1/2)+13))/2

c in { (-(209^(1/2)+13))/2, (209^(1/2)-13)/2 }

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