-7/x^2-4/x^2

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Solution for -7/x^2-4/x^2 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)

-7/(x^2)-(4/(x^2)) = 0

-7/(x^2)-4*x^-2 = 0

-11*x^-2 = 0 // : -11

x^-2 = 0

x naleu017Cy do O

x belongs to the empty set

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