Evaluate 4 square root of 80-2 square root of 45-2 square root of 180

Math
Simplify each term.
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Rewrite as .
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Factor out of .
Rewrite as .
Pull terms out from under the radical.
Multiply by .
Rewrite as .
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Factor out of .
Rewrite as .
Pull terms out from under the radical.
Multiply by .
Rewrite as .
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Factor out of .
Rewrite as .
Pull terms out from under the radical.
Multiply by .
Simplify by adding terms.
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Subtract from .
Subtract from .
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Evaluate 4 square root of 80-2 square root of 45-2 square root of 180

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