(x^2-6x-16)/(x+2)

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Solution for (x^2-6x-16)/(x+2) equation: 


D( x )

x+2 = 0

x+2 = 0

x+2 = 0

x+2 = 0 // - 2

x = -2

x in (-oo:-2) U (-2:+oo)

(x^2-(6*x)-16)/(x+2) = 0

(x^2-6*x-16)/(x+2) = 0

x^2-6*x-16 = 0

x^2-6*x-16 = 0

DELTA = (-6)^2-(-16*1*4)

DELTA = 100

DELTA > 0

x = (100^(1/2)+6)/(1*2) or x = (6-100^(1/2))/(1*2)

x = 8 or x = -2

(x+2)*(x-8) = 0

x-8 = 0

x-8 = 0 // + 8

x = 8

x = 8

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