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 a = , d = 6)

Simplify the expression uisng order of operations (PEMDAS).

First operation is evaluating the expression within the parentheses.

               (Subtract: )

                        (Evaluate power:)

Next operation is addition.

                               (Add: )

The value of the expression is .