(3^2+13x-56)/(x+7)

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Solution for (3^2+13x-56)/(x+7) equation: 


D( x )

x+7 = 0

x+7 = 0

x+7 = 0

x+7 = 0 // - 7

x = -7

x in (-oo:-7) U (-7:+oo)

(13*x+3^2-56)/(x+7) = 0

(13*x-47)/(x+7) = 0

13*x-47 = 0 // + 47

13*x = 47 // : 13

x = 47/13

x = 47/13

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