Question

Evaluate 4(a? +26) - 2b when a = 2 and b = -2

Answer 1

The expression is

$4(a^2+26)-2b$

If a=2 and b=-2

Replace the values in the expresion:

$\begin{gathered} 4(a^2+26)-2b \\ 4a^2+104-2b \\ 4(2)^2+104-2(-2) \\ 16+104+4 \\ 124 \end{gathered}$

So

$\begin{gathered} 4(a^2+26)-2b=124 \\ \text{When} \\ a=2 \\ b=-2 \end{gathered}$