3X-12/X^2-4X

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Solution for 3X-12/X^2-4X equation: 


D( X )

X^2 = 0

X^2 = 0

X^2 = 0

1*X^2 = 0 // : 1

X^2 = 0

X = 0

X in (-oo:0) U (0:+oo)

3*X-(4*X)-(12/(X^2)) = 0

3*X-4*X-12*X^-2 = 0

-X-12*X^-2 = 0

-X*(12*X^-3+1) = 0

12*X^-3 = -1 // : 12

X^-3 = -1/12

-3 < 0

1/(X^3) = -1/12 // * X^3

1 = -1/12*X^3 // : -1/12

-12 = X^3

X^3 = -12 // ^ 1/3

X = -12^(1/3)

-X = 0

-1*X = 0 // : -1

X = 0

X in { 0} 

X = -12^(1/3)

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