### Evaluating Exponential Expressions

When evaluating expressions we must keep in mind the order of operations. You must remember **PEMDAS:**

- Evaluate inside the
**Parentheses**. - Evaluate
**E**xponents. - Perform
**M**ultiplication and**D**ivision operations from left to right. - Perform
**A**ddition and**S**ubtraction operations from left to right.

#### Evaluating Expressions

1. Evaluate the following expressions.

a)

A number raised to the power 0 is always 1.

b)

c)

Remember that an exponent of means taking the square root.

d)

Remember that an exponent of means taking the cube root.

2. Evaluate the following expressions.

a)

Evaluate the exponent:

Perform multiplications from left to right:

Perform additions and subtractions from left to right:

b)

Treat the expressions in the numerator and denominator of the fraction like they are in parentheses:

c)

#### Evaluating Expressions for Given Values

Evaluate the following expressions for .

a)

b)

c)

### Example

#### Example 1

Evaluate the following expression for .

### Review

Evaluate the following expressions to a single number.

- , if and
- , if and
- , if and
- , if and
- , if and

### Review (Answers)

To view the Review answers, open this PDF file and look for section 8.7.