(4x^2+15x+15)/(x+2)

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Solution for (4x^2+15x+15)/(x+2) equation: 


D( x )

x+2 = 0

x+2 = 0

x+2 = 0

x+2 = 0 // - 2

x = -2

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

(4*x^2+15*x+15)/(x+2) = 0

4*x^2+15*x+15 = 0

4*x^2+15*x+15 = 0

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

DELTA = -15

DELTA < 0

1 = 0

1/(x+2) = 0

x belongs to the empty set

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