(x^2-2x-48)/(x+5)

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Solution for (x^2-2x-48)/(x+5) equation: 


D( x )

x+5 = 0

x+5 = 0

x+5 = 0

x+5 = 0 // - 5

x = -5

x in (-oo:-5) U (-5:+oo)

(x^2-(2*x)-48)/(x+5) = 0

(x^2-2*x-48)/(x+5) = 0

x^2-2*x-48 = 0

x^2-2*x-48 = 0

DELTA = (-2)^2-(-48*1*4)

DELTA = 196

DELTA > 0

x = (196^(1/2)+2)/(1*2) or x = (2-196^(1/2))/(1*2)

x = 8 or x = -6

(x+6)*(x-8) = 0

((x+6)*(x-8))/(x+5) = 0

( x+6 )

x+6 = 0 // - 6

x = -6

( x-8 )

x-8 = 0 // + 8

x = 8

x in { -6, 8 }

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