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Admin2

((-196z^3)/(y^21))-(2z/y^7)

apologiabiology

anything to the 0 power is 1
so we get
-1y⁻⁷z
(-1)(y⁻⁷)(z)
and \(x^{-m}= \frac{1}{x^m}\)
\((-1)(y^{-7})(z)= \frac{(-1)(z)}{y^7} = \frac{-z}{y^7}\)

last option

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