(x^2-9x)/(x+3)=0

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Solution for (x^2-9x)/(x+3)=0 equation: 


D( x )

x+3 = 0

x+3 = 0

x+3 = 0

x+3 = 0 // - 3

x = -3

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

(x^2-(9*x))/(x+3) = 0

(x^2-9*x)/(x+3) = 0

x^2-9*x = 0

x*(x-9) = 0

x-9 = 0 // + 9

x = 9

x*(x-9) = 0

(x*(x-9))/(x+3) = 0

( x-9 )

x-9 = 0 // + 9

x = 9

( x )

x = 0

x in { 9, 0 }

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