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10. simplify the expression. p(p^-7q^-3)^-2q^-3 a) p/q^3 b) p^15/q^9 c) 1/(p^9q^2) d) p^12q

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p(p^(-7)q^(-3))^(-2)q^(-3)=p(p^(-7*-2)q^(-3*-2))q^(-3)\\=p(p^(14)q^(6))q^(-3)=p^(15)q^9
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