The Formula to Find the Distance D Between Two Points $\left( x _ { 1 } , y _ { 1 } \right)$

question 171

Essay

The formula to find the distance d between two points $\left( x _ { 1 } , y _ { 1 } \right)$ and $\left( x _ { 2 } , y _ { 2 } \right)$ is d= __________.

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