Precalculus Examples

The length of the vector is the square root of the quantity of the coordinate squared plus the coordinate squared.
Evaluate the square root.
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Remove parentheses around .
Raise to the power of to get .
Remove parentheses around .
Raise to the power of to get .
Add and to get .
Rewrite as .
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Factor out of .
Rewrite as .
Pull terms out from under the radical.
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