Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Reorder terms.

Cancel the common factor.

Divide by .

Simplify (x^2-16)/(4+x)

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# Simplify (x^2-16)/(4+x)

Rewrite as .

Since both terms are perfect squares, factor using the difference of squares formula, where and .

Reorder terms.

Cancel the common factor.

Divide by .

Simplify (x^2-16)/(4+x)