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College Algebra  /  Alg 126  ·  Atom · ~20 seconds

The Distance Formula

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The distance formula measures between two points by the Pythagorean theorem: d = √((x₂ − x₁)² + (y₂ − y₁)²).

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From (1, 2) to (4, 6): the legs are 3 and 4, so d = √(9 + 16) = √25 = 5.

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The radical covers the whole sum.

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