(x^3+64x)/(x-9)

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Solution for (x^3+64x)/(x-9) equation: 


D( x )

x-9 = 0

x-9 = 0

x-9 = 0

x-9 = 0 // + 9

x = 9

x in (-oo:9) U (9:+oo)

(x^3+64*x)/(x-9) = 0

x^3+64*x = 0

x*(x^2+64) = 0

1*x^2 = -64 // : 1

x^2 = -64

x = 0

x/(x-9) = 0

x = 0

x = 0

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