x^2-18x+81/9-x

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Solution for x^2-18x+81/9-x equation: 


x in (-oo:+oo)

x^2-(18*x)-x+81/9 = 0

x^2-18*x-x+81/9 = 0

x^2-19*x+9 = 0

DELTA = (-19)^2-(1*4*9)

DELTA = 325

DELTA > 0

x = (325^(1/2)+19)/(1*2) or x = (19-325^(1/2))/(1*2)

x = (5*13^(1/2)+19)/2 or x = (19-5*13^(1/2))/2

x in { (19-5*13^(1/2))/2, (5*13^(1/2)+19)/2 }

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