(-3*36*x^2-x^4)/(x^2-36)^2

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Solution for (-3*36*x^2-x^4)/(x^2-36)^2 equation: 


D( x )

(x^2-36)^2 = 0

(x^2-36)^2 = 0

(x^2-36)^2 = 0

1*x^2 = 36 // : 1

x^2 = 36

x^2 = 36 // ^ 1/2

abs(x) = 6

x = 6 or x = -6

x in (-oo:-6) U (-6:6) U (6:+oo)

(-x^4-3*36*x^2)/((x^2-36)^2) = 0

(-x^4-108*x^2)/((x^2-36)^2) = 0

-x^4-108*x^2 = 0

-x^2*(x^2+108) = 0

1*x^2 = -108 // : 1

x^2 = -108

-x^2 = 0

(-x^2)/((x^2-36)^2) = 0

-1*x^2 = 0 // : -1

x^2 = 0

x = 0

x = 0

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