(b^2+8b+12)/(b+2)

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Solution for (b^2+8b+12)/(b+2) equation: 


D( b )

b+2 = 0

b+2 = 0

b+2 = 0

b+2 = 0 // - 2

b = -2

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

(b^2+8*b+12)/(b+2) = 0

b^2+8*b+12 = 0

b^2+8*b+12 = 0

DELTA = 8^2-(1*4*12)

DELTA = 16

DELTA > 0

b = (16^(1/2)-8)/(1*2) or b = (-16^(1/2)-8)/(1*2)

b = -2 or b = -6

(b+6)*(b+2) = 0

b+6 = 0

b+6 = 0 // - 6

b = -6

b = -6

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