(x^2-9x-10)/(x+1)

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Solution for (x^2-9x-10)/(x+1) equation: 


D( x )

x+1 = 0

x+1 = 0

x+1 = 0

x+1 = 0 // - 1

x = -1

x in (-oo:-1) U (-1:+oo)

(x^2-(9*x)-10)/(x+1) = 0

(x^2-9*x-10)/(x+1) = 0

x^2-9*x-10 = 0

x^2-9*x-10 = 0

DELTA = (-9)^2-(-10*1*4)

DELTA = 121

DELTA > 0

x = (121^(1/2)+9)/(1*2) or x = (9-121^(1/2))/(1*2)

x = 10 or x = -1

(x+1)*(x-10) = 0

x-10 = 0

x-10 = 0 // + 10

x = 10

x = 10

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