$\"\"$

The expression is $\"\"$

$\"\"$ (Substitute g = 2, r = 3)

To simplify the expression follow the order of operations: (PEMDAS)

1. Evaluate the expressions inside Brackets/Parenthesis (P).

2. Evaluate Powers/Exponents (E).

3. Multiply and/or Divide in order from left to right (MD).

4. Add and/or Subtract in order from left to right (AS).

A simple technique for remembering the order pf operations is turned into phrase

“Please Excuse My Dear Aunty Sally” $\"\"$

First operation is evaluating powers.

$\"\"$ (Evaluate the power: $\"\"$ )

Next operation is subtraction.

$\"\"$ (Additive inverse property: $\"\"$ )

Next operation is evaluating powers.

$\"\"$ (Evaluate the power: $\"\"$ )

Next operation is Addition.

$\"\"$ (Additive identity property: $\"\"$ ) $\"\"$

The value of the expression is 9.