Question

Calcule a distância entre os pontos A(7,-3) e B(-4,-1)

Answer 1

d(A,B)=$\sqrt{(X-X0)^2+(Y-Y0)^2}$
d(A,B)=$\sqrt{(-4-7)^2+(-1+3)^2}$
d(A,B)=$\sqrt{(-11)^2+(+2)^2}$
d(A,B)=$\sqrt{121+4}$
d(A,B)=$\sqrt{125}$=$\sqrt{5*25}$=5$\sqrt{5}$