(27x^-3y^5z^7/-9x^-5y^-4z)^-2

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Solution for (27x^-3y^5z^7/-9x^-5y^-4z)^-2 equation: 


D( x )

x^-5*y^-4*((27*x^-3*y^5*z^7)/(-9))*z = 0

x = 0

x^-5*y^-4*((27*x^-3*y^5*z^7)/(-9))*z = 0

x^-5*y^-4*((27*x^-3*y^5*z^7)/(-9))*z = 0

-3*x^-8*y*z^8 = 0 // : -3*y*z^8

x^-8 = 0

x naleu017Cy do O

x = 0

x = 0

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

(x^-5*y^-4*((27*x^-3*y^5*z^7)/(-9))*z)^-2 = 0

1/9*x^16*y^-2*z^-16 = 0 // : 1/9*y^-2*z^-16

x^16 = 0

x = 0

x in { 0} 

x belongs to the empty set

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