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 x = 3,and y = 4 in the expression.

.                  (Substitute x = 3,and y = 4)

Simplify the expression using order of operations (PEMDAS).

First evaluate the expression within the parentheses.

Add within the parentheses.

                        (Add: )

Next operation is evaluate powers.

                                 (Evaluate power: )

Next operation is subtraction.

                                       (Subtract: )

The value of the expression is 45.4.