$\"\"$

\

The expression is $\"\"$ .

\

Multiply by $\"\"$ , the reciprocal of $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Factors of the denominator $\"\"$ .

\

To find two numbers, a and b, with the product of 4 · 1 or 4 and the sum of 4.

\

The correct factors are 2 and 2.

\

$\"\"$ (Write the factors form)

\

$\"\"$ (Substitute m = 2, and n = 2)

\

$\"\"$ (Group terms with common factors)

\

$\"\"$ (Factor the GCF from each grouping terms)

\

$\"\"$ (Take out common factor (b + 2)) $\"\"$ Substitute factors of $\"\"$ $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Take out common factors.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The simplified expression is $\"\"$ .