(x^2+11x+31)/(x+7)

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Solution for (x^2+11x+31)/(x+7) equation: 


D( x )

x+7 = 0

x+7 = 0

x+7 = 0

x+7 = 0 // - 7

x = -7

x in (-oo:-7) U (-7:+oo)

(x^2+11*x+31)/(x+7) = 0

x^2+11*x+31 = 0

x^2+11*x+31 = 0

DELTA = 11^2-(1*4*31)

DELTA = -3

DELTA < 0

1 = 0

1/(x+7) = 0

x belongs to the empty set

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