Question

determine a distância entre os pontos a(7-3) b(2,2)

Answer 1

$A(7-3)\ e\ B(2,2)\\d(A,B)= \sqrt{(2-7)^2+(2-(-3))^2}\\d(A,B)= \sqrt{(-5)^2+(2+3)^2}\\d(A,B)= \sqrt{25+5^2}\\d(A,B)= \sqrt{25+25}\\d(A,B)= \sqrt{50}\\d(A,B)=5 \sqrt{2}$