(c^2+8c+15)/(c+3)

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Solution for (c^2+8c+15)/(c+3) equation: 


D( c )

c+3 = 0

c+3 = 0

c+3 = 0

c+3 = 0 // - 3

c = -3

c in (-oo:-3) U (-3:+oo)

(c^2+8*c+15)/(c+3) = 0

c^2+8*c+15 = 0

c^2+8*c+15 = 0

DELTA = 8^2-(1*4*15)

DELTA = 4

DELTA > 0

c = (4^(1/2)-8)/(1*2) or c = (-4^(1/2)-8)/(1*2)

c = -3 or c = -5

(c+5)*(c+3) = 0

c+5 = 0

c+5 = 0 // - 5

c = -5

c = -5

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