(3x^2+12x-36)/(x+6)

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Solution for (3x^2+12x-36)/(x+6) equation: 


D( x )

x+6 = 0

x+6 = 0

x+6 = 0

x+6 = 0 // - 6

x = -6

x in (-oo:-6) U (-6:+oo)

(3*x^2+12*x-36)/(x+6) = 0

3*x^2+12*x-36 = 0

3*(x^2+4*x-12) = 0

x^2+4*x-12 = 0

DELTA = 4^2-(-12*1*4)

DELTA = 64

DELTA > 0

x = (64^(1/2)-4)/(1*2) or x = (-64^(1/2)-4)/(1*2)

x = 2 or x = -6

3*(x+6)*(x-2) = 0

3*(x-2) = 0

x-2 = 0 // + 2

x = 2

x = 2

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