(x^2+19x+90)/(x+10)

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Solution for (x^2+19x+90)/(x+10) equation: 


D( x )

x+10 = 0

x+10 = 0

x+10 = 0

x+10 = 0 // - 10

x = -10

x in (-oo:-10) U (-10:+oo)

(x^2+19*x+90)/(x+10) = 0

x^2+19*x+90 = 0

x^2+19*x+90 = 0

DELTA = 19^2-(1*4*90)

DELTA = 1

DELTA > 0

x = (1^(1/2)-19)/(1*2) or x = (-1^(1/2)-19)/(1*2)

x = -9 or x = -10

(x+10)*(x+9) = 0

x+9 = 0

x+9 = 0 // - 9

x = -9

x = -9

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