Answer:
3√5 or approx. ≈ 6.71
Explanation:
Find the difference between coordinates:
(x2-x1) = (-5 - -2) = -3
(y2-y1) = (-7 - -1) = -6
Square the results and sum them up:
(-3)2 + (-6)2 = 9 + 36 = 45
Now Find the square root and that's your result:
Exact solution: √45 = 3√5