Question

interpole 3 meios aritméticos entre 2 e 18

Answer 1

$PA(2,a_2,a_3,a_4,18)\\ \\ a_5=a_1+4r\\ \\ 18=2+4r\\ \\ 4r=14\\ \\ r=4\\ \\ \boxed{PA(2,6,10,14,18)}$