Question

(x + y)² – 3zz when X = -2, y = -4, and z = 5.

Answer 1

-39

Explanation

$\begin{gathered} \mleft(x+y\mright)^2-3zz \\ \end{gathered}$

Step 1

let

x=-2

y=-4

z=5

Step 2

Now, replace those values in the expression

$\begin{gathered} (x+y)^2-3zz \\ (-2+(-4))^2-3\cdot5\cdot5 \\ (-2-4)^2-75 \\ (-6)^2-75 \\ 36-75 \\ -39 \end{gathered}$

I hope this helps you