The expression is .

Substitute the values in above expression.

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 of operations is turned

into phrase.

“Please Excuse My Dear Aunty Sally”

In the given expression there is no grouping symbols.

First operation is evaluate powers.

                (Evaluate power: )

Next operation is multiplication.

                    (Multiply: )

Next operation is subtraction.

                            (Subtract: )

The simplified expression value is 6.