(a^5a^-2)^3/a^7

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Solution for (a^5a^-2)^3/a^7 equation: 


D( a )

a = 0

a^7 = 0

a = 0

a = 0

a^7 = 0

a^7 = 0

1*a^7 = 0 // : 1

a^7 = 0

a = 0

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

((a^-2*a^5)^3)/(a^7) = 0

1*a^2 = 0 // : 1

a^2 = 0

a = 0

a in { 0} 

a belongs to the empty set

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