a)
\(=\frac{8^3}{\left(-8\right)^{-5}}=\frac{8^3}{-\frac{1}{8^5}}=8^3.-\left(8\right)^5=-8^8\)
b)
\(=\frac{15x^2y^2}{5xy^2}=3x\)
\(8^3:\left(-8\right)^{-5}=\frac{8^3}{-\frac{1}{8^5}}=8^3.\left(-8\right)^5=-8^8\)
\(15x^2y^2:5xy^2=3x\)
a, \(8^3:\left(-8\right)^{-5}=8^3.\left(-8\right)^5=-8^8\)
b, \(15x^2y^2:5xy^2=3x\)
\(8^3:\left(-8\right)^{-5}=8^3:\left(\frac{1}{\left(-8\right)^5}\right)=8^3.\left(-8\right)^5\)\(=\left(-8\right)^8\)
\(15x^2y^2:5xy^2=\left(15:5\right)\left(x^2:x\right)\left(y^2:y^2\right)=3x\)
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