Question

Calcule a distância entre dois pontos A (7, 6) e B (8, 2)

Answer 1

$d = \sqrt{(x - x_{0})^{2} + (y - y_{0})^{2} } \\d = \sqrt{(7 - 8)^{2} + (6 - 2)^{2} } \\d = \sqrt{(- 1)^{2} + (4)^{2} } \\d = \sqrt{1 +16 } \\d = \sqrt{17 }$