The expression is .

             (Factors the denominator)

                            (Cancel common terms)

Exclude the values for which , and the denominator cannot equal 0.

1) The first term is perfect square: .

2) The last term is perfect square: .

3) The middle term equal to 2(x)(4): .

is a perfect square equation.

Then write the expression in the form: .

                                  (The perfect square: )

Apply square roots property: If then .

Apply subtraction property of equality: If a = b then .

                                       (Apply additive inverse property: )

                                         (Apply additive identity property: )

Then the value of x not equal .

The value of x not equal .