Question

calcule a distancia entre os pontos a(-4,0) b(4,3)

Answer 1

Oi :)

Segue: 

$d_{ab} =\sqrt{(x_b-x_a)^2+(y_b-y_a)^2} \\ \\ d_{ab} =\sqrt{(4-(-4))^2+(3-0)^2} \\ \\ d_{ab} =\sqrt{(8)^2+(3)^2} \\ \\ d_{ab} =\sqrt{64+9} \\ \\ d_{ab} =\sqrt{73}$