(2x^2/5y)^-3

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Solution for (2x^2/5y)^-3 equation: 


D( x )

((2*x^2)/5)*y = 0

((2*x^2)/5)*y = 0

((2*x^2)/5)*y = 0

2/5*x^2*y = 0 // : 2/5*y

x^2 = 0

x = 0

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

(((2*x^2)/5)*y)^-3 = 0

125/8*x^-6*y^-3 = 0 // : 125/8*y^-3

x^-6 = 0

x należy do O

x belongs to the empty set

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