3/(x+2)(x-7)

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Solution for 3/(x+2)(x-7) 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)

(3/(x+2))*(x-7) = 0

(3*(x-7))/(x+2) = 0

x-7 = 0 // + 7

x = 7

x = 7

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