Question

A(-13,-11) ; B(-2,-9), then AB -​

Answer 1

-2

$( - 2 + 13) {}^{2} + ( - 9 + 11) {}^{2} \\ = 121 + 4 \\ = \sqrt{125 }$

Answer 2

Answer:

AB=

$\sqrt{ { (- 13 - ( - 2))}^{2} + {( - 11 - ( - 9))}^{2} } \\ \\ \\ = \sqrt{ {( - 13 + 2)}^{2} + {( - 11 + 9)}^{2} } \\ \\ \\ = \sqrt{ {( - 11)}^{2} + {( - 2)}^{2} } \\ \\ \\ = \sqrt{121+ 4} \\ \\ \\ \\ = \sqrt{125} \: \: units$