## Algebra: A Combined Approach (4th Edition)

$2+(5-2)+4^{2}=21$
$2+(5-2)+4^{2}$ First, perform the operation that's inside the grouping symbol: $2+(5-2)+4^{2}=2+3+4^{2}=...$ Next, evaluate the exponential expression and finally, after that, the sums: $...=2+3+16=21$