Resposta:
A) D(15) = {-15, -5, -3, -1, 1, 3, 5, 15}.
B) D(25) = {-25, -5, -1, 1, 5, 25}.
C) D(30) = {-30, -15, -10, -6, -5, -3, -2, -1, 1, 2, 3, 5, 6, 10, 15 ,30}.
D) D(2) = {-2, -1, 1, 2}
E) D(6) = {-6, -3, -2, -1, 1, 2, 3, 6}
F) D(10) = {-10, -5, -2, -1, 1, 2, 5, 10}
G) D(12) = {-12, -6, -4, -3, -2, -1, 1, 2, 3, 4, 6, 12}
H) D(16) = {-16, -8, -4, -2, -1, 1, 2, 4, 8, 16}
I) D(28) = {-28, -14, -7, -4, -2, -1, 1, 2, 4, 7, 14, 28}
J) D(20) = {-20, -10, -5, -4, -2, -1, 1, 2, 4, 5, 10, 20}
Explicação passo-a-passo: