Question

determine a distancia entre os pontos A(3,0) e B(-3,0)

Answer 1

Distância dentre os pontos A(3,0) e B(-3,0):

$D= \sqrt{(x''-x')^2+(y''-y')^2} \\ \\ D= \sqrt{(-3-3)^2+(0-0)^2} \\ \\ D= \sqrt{(-6)^2+(0)^2} \\ \\ D= \sqrt{36} \\ \\ D= 6$

Answer 2

D=$\sqrt{(x"-x)^2 +(y"-y)^2$}
D=$\sqrt{(-3-3)^2+(0-0)^2}$}
D=$\sqrt{(-6)^2+(0)^2}$
D=$\sqrt{36}$
D= 6