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![\bf \textit{distance between 2 points}\\ \quad \\ \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({{ -17}}\quad ,&{{ 7}})\quad % (c,d) &({{ -22}}\quad ,&{{ 5}}) \end{array}\quad % distance value \begin{array}{llll} d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}\\\\\\ d=\sqrt{[(-22)-(-17)]^2+[5-7]^2} \end{array}](/tpl/images/0205/8037/cc633.png)
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Distance between (-17,7) and (-22,5)...
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