Question

encontre o termo geral da pa (12,16,20...)​

Answer 1

r = a2 - a1

r = 16 - 12

r = 4

an = a1 + (n - 1) * r

an = 12 + (n - 1) * 4

an = 12 + 4n - 4

an = 4n + 8

Answer 2

a1= 12

r= a2 - a1= 16 - 12 = 4

an= a1 + (n - 1) • r

an= 12 + (n - 1) • 4

an= 12 + 4n - 4

an= 8 + 4n