$\"\"$ $\"\"$

The word times represents multiplication ( $\"\"$ )

The word minus represents subtraction ( $\"\"$ )

The word sum represents addition (+)

"7 times the sum of a squared and b minus 4 times the sum of a squared and b"

Thus, the algebraic expression is “ $\"\"$ “ $\"\"$

$\"\"$

Combine like terms using distributive property: $\"\"$ .

$\"\"$

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

The simplified expression is $\"\"$ .