x^2/7-6+x=-6

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Solution for x^2/7-6+x=-6 equation: 


x in (-oo:+oo)

(x^2)/7+x-6 = -6 // + 6

(x^2)/7+x-6+6 = 0

1/7*x^2+x = 0

DELTA = 1^2-(0*1/7*4)

DELTA = 1

DELTA > 0

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

x = 0 or x = -7

x in { -7, 0 }

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