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(Please help, I don't understand) Use the distance formula to find the distance between each pair of points:

(Please help, I don't understand) Use the distance formula to find the distance between-example-1

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Explanation:

Distance = √(x_2 - x_1)² + (y_2 - y_1)²

Distance = √[(-a) - a]² + (b - b)²

Distance = √[-2a]² + (0)²

Distance = √4a²

Distance = 2a

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