Exercise26

Evaluate the following expressions.

  1. Evaluate \({r^{2}y^{3}}\) when \(r=-1\) and \(y=-4\text{.}\) \(\displaystyle{{r^{2}y^{3}}=}\)

  2. Evaluate \({r^{3}y^{2}}\) when \(r=-1\) and \(y=-4\text{.}\) \(\displaystyle{{r^{3}y^{2}}=}\)

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