-4x^3y^-2/(2x)^2

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


D( x )

(2*x)^2 = 0

(2*x)^2 = 0

(2*x)^2 = 0

4*x^2 = 0 // : 4

x^2 = 0

x = 0

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

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

x*(-y^-2) = 0 // : -y^-2

x = 0

x in { 0} 

x belongs to the empty set

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