Question

Calcule a distância entre os pontos P (-5, 4) e Q (-2, 7)

Answer 1

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1^2)}\\\\d_{PQ}=\sqrt{(-2-(-5))^2+(7-4)^2}\\\\d_{PQ}=\sqrt{3^2+3^2}\\\\d_{PQ}=\sqrt{18}\\\\d_{PQ}=3\sqrt{2}$