(x^2+13x+40)/(x+8)

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Solution for (x^2+13x+40)/(x+8) equation: 


D( x )

x+8 = 0

x+8 = 0

x+8 = 0

x+8 = 0 // - 8

x = -8

x in (-oo:-8) U (-8:+oo)

(x^2+13*x+40)/(x+8) = 0

x^2+13*x+40 = 0

x^2+13*x+40 = 0

DELTA = 13^2-(1*4*40)

DELTA = 9

DELTA > 0

x = (9^(1/2)-13)/(1*2) or x = (-9^(1/2)-13)/(1*2)

x = -5 or x = -8

(x+8)*(x+5) = 0

x+5 = 0

x+5 = 0 // - 5

x = -5

x = -5

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