Chapter R - Section R.3 - Exponents, Roots, and Order of Operations - R.3 Exercises - Page 30: 75

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Using order of operations and the properties of radicals, the given expression, $ \dfrac{2(-5)+(-3)(-2)}{-8+3^2-1} ,$ simplifies to \begin{array}{l}\require{cancel} \dfrac{-10+6}{-8+9-1} \\\\= \dfrac{-4}{1-1} \\\\= \dfrac{-4}{0} \\\\= \text{undefined} .\end{array}