Order of Operations:

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

1.    Evaluate the expressions inside the Parenthesis/Brackets (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"

The expression is .

Substitute z = 5 and x = 3 in the expression.

                              (Substitute z = 5 and x = 3)

Simplify the expression using order of operations (PEMDAS).

Since there are no grouping symbols, first operation is evaluate powers.

                                   (Evaluate power: )

Next operation is multiplication.

                                              (Multiply: )

Next operation is subtraction.

                                                    (Subtract: )

The value of the expression is 26.