IMathAS-libretexts

Simplify. All exponents should be positive. Be sure to factor out all GCF's if possible.

$\displaystyle \frac{{{x}^{{-{10}}}+{y}^{{-{15}}}}}{{\left({x}{y}\right)}^{{-{4}}}}=$

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Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question