Question

Caucule a distancia entre os pontos dados A(2,-3), e B(-1,4).

Answer 1

Vamos utilizar a fórmula da distância entre dois pontos:

$d_{AB}=\sqrt{(x_A-x_B)^2+(y_A-y_B)^2}\\\\\\d_{AB}=\sqrt{(2-(-1))^2+((-3)-4)^2}\\\\\\d_{AB}=\sqrt{(3)^2+(-7)^2}\\\\\\d_{AB}=\sqrt{9+49}\\\\\\d_{AB}=\sqrt{58}$