Question

determinar a distancia entre os pontos A=(8,3) B=(-4,8)

Answer 1

$d= \sqrt{|x_2-x_1|^2+|y_2-y_1|^2} \\\\d= \sqrt{|-4-8|^2+|8-3|^2} \\\\d= \sqrt{|-12^2|+|5|^2}\\\\d= \sqrt{12^2+5^2} \\\\d= \sqrt{144+25} \\\\d= \sqrt{169} \\\\\boxed{d=13}~~(essa~\'e~a~dist\^ancia)\\\\;)$