Rewrite as .

Factor out of .

Rewrite as .

Pull terms out from under the radical.

Multiply by .

Rewrite as .

Factor out of .

Rewrite as .

Pull terms out from under the radical.

Multiply by .

Rewrite as .

Factor out of .

Rewrite as .

Pull terms out from under the radical.

Multiply by .

Subtract from .

Subtract from .

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

Evaluate -3 square root of 27-3 square root of 27-3 square root of 27