Question

Calcule a distância entre os
pontos A e B, sendo A = (0,0)
e B = (3,-4).

Answer 1

$dAB=\sqrt{(3-0)^2+(-4-0)^2}\\dAB=\sqrt{3^2+(-4)^2}\\dAB=\sqrt{9+16}\\dAB=\sqrt{25}\\dAB=5$