Question

Numa PA de primeiro termo a1=10 e razao =2 determine o termo geral dessa PA

Answer 1

an = a1 + (n-1)r
an = 10 + (n-1).2
an = 10 + 2n - 2
an = 2n + 8

Answer 2

An = 10 + (n -1) . 2
An = 10 + 2n -2
An = 8 + 2n