Algebra1 Glencoe CCSS Edition page 12 problem 12

Question

Evaluate the expression if a = 4, b = 6, and c = 8.

b(9 - c)/a^2

Answer 1

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".

Step:1

The expression is .

         (Substitute)

Simplify the expression using order of operations (PEMDAS)

Since there are no grouping symbols and powers.

First operation is Evaluate the expressions within the parentheses.

=           (Evaluate power : )

Step:2

Next operation is subtraction.

=                 (Subtract : )

Next operation is multiplication.

=                    (Multiply : )

Next operation is division.

=                      (Divide : )

Solution:

The value of the expression .