Question

Qual é a distancia entre os pontos (5,-1) e (3,2)

Answer 1

$a~(5~;~-1)~~~e~~~b~(3~;~2)\\\\\\ d_{ab}= \sqrt{(x_b-x_a)^2+(y_b-y_a)^2}\\\\\\d_{ab}= \sqrt{(3-5)^2+(2-(-1))^2}\to\\\\ d_{ab}= \sqrt{(-2)^2+(2+1)^2}\to\\\\ d_{ab}= \sqrt{(-2)^2+3^2}\to\\\\ d_{ab}= \sqrt{4+9}\to\\\\ \boxed{d_{ab}= \sqrt{13~}}$