Maths-

General

Easy

Question

# What is the simplified form of the rational expression ? What is its domain?

## The correct answer is: The domain of the expression is the set of values excluding the zero value of the denominator. That is: x - 3 = 0 x = 3

### ANSWER:

Hint:

The expansions of certain identities are:

We are asked to simplify the expression and find its domain.

Step 2 of 3:

Simplify the denominator of the expression:

Step 2 of 3:

Simplify the denominator of the expression:

Step 3 of 3:

The domain of the expression is the set of values excluding the zero value of the denominator. That is:

Hence, the domain is:

Note:

When you find the domain of a rational expression exclude the values that bring zero to the denominator.

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