Question

 CALCULE A DIST?NCIA ENTRE OS PONTOS A(a-2, b+8) e B(a+4,b)?

Answer 1

$d_{AB}=\sqrt{(a+4-a+2)^2+(b-b-8)^2}=\sqrt{6^2+(-8)^2}=\sqrt{36+64}=\\ \\\sqrt{100}=10$