Question

Find the distance between the two points (4,-5) and (-1,7) In units

Answer 1

$\sqrt{ {(4 + 1)}^{2} + {( - 5 - 7)}^{2} } \\ {5}^{2} = 25 \\ { - 12}^{2} = 144 \\ 144 + 25 = 169 \\ \sqrt{169} = 13$