Exercise 31

Evaluate the following expressions.

  1. Evaluate \({x^{2}r^{3}}\) when \(x=-3\) and \(r=-1\text{.}\)

    \(\displaystyle{{x^{2}r^{3}}=}\)

  2. Evaluate \({x^{3}r^{2}}\) when \(x=-3\) and \(r=-1\text{.}\)

    \(\displaystyle{{x^{3}r^{2}}=}\)

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