Question

For the following exercises, evaluate each expression.

${\left(y+z\right)}^2$when localid="1644418403317" $y=-4,z=7$

Short answer

The value of the given expression is$9.$

Step-by-step solution

Step 1. Given information

${\left(y+z\right)}^2;y=-4,z=7$

Step 2. Evaluate the expression

$$\begin{gathered} {\left(y+z\right)}^2={\left(-4+7\right)}^2\text{use}y=-4,z=7 \\ ={\left(3\right)}^2 \\ =3\times 3 \\ =9 \end{gathered}$$

Hence, the value of the given expression$=9.$