-18x/(x^2-9)^2

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Solution for -18x/(x^2-9)^2 equation: 


D( x )

(x^2-9)^2 = 0

(x^2-9)^2 = 0

(x^2-9)^2 = 0

1*x^2 = 9 // : 1

x^2 = 9

x^2 = 9 // ^ 1/2

abs(x) = 3

x = 3 or x = -3

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

(-18*x)/((x^2-9)^2) = 0

-18*x = 0 // : -18

x = 0

x = 0

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