x^2-18/7-x

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Solution for x^2-18/7-x equation: 


x in (-oo:+oo)

x^2-x-(18/7) = 0

x^2-x-18/7 = 0

x^2-x-18/7 = 0

DELTA = (-1)^2-(-18/7*1*4)

DELTA = 79/7

DELTA > 0

x = ((79/7)^(1/2)+1)/(1*2) or x = (1-(79/7)^(1/2))/(1*2)

x = ((79/7)^(1/2)+1)/2 or x = (1-(79/7)^(1/2))/2

x in { (1-(79/7)^(1/2))/2, ((79/7)^(1/2)+1)/2 }

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