Multiply by .

Multiply and .

Expand the denominator using the FOIL method.

Simplify.

Factor out of .

Cancel the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Move the negative in front of the fraction.

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

Simplify -9/(4 square root of 2+2)