[tex]ab= \sqrt{(x2 - x1)^{2}+ (y2 - y1)^{2} } = \sqrt{ (- 17 - 3)^{2} + (4 + 11)^{2} } = \sqrt{( - 20)^{2} + (15)^{2} } = \sqrt{400 + 225} = \sqrt{625} = 25 [/tex]
Ответ: А) 25.
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[tex]ab= \sqrt{(x2 - x1)^{2}+ (y2 - y1)^{2} } = \sqrt{ (- 17 - 3)^{2} + (4 + 11)^{2} } = \sqrt{( - 20)^{2} + (15)^{2} } = \sqrt{400 + 225} = \sqrt{625} = 25 [/tex]
Ответ: А) 25.