Rewrite as .

Factor out of .

Rewrite as .

Pull terms out from under the radical.

Rewrite as .

Factor out of .

Rewrite as .

Pull terms out from under the radical.

Add and .

Subtract from .

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

Evaluate square root of 45+ square root of 20- square root of 5