Question

4 terms of this sequence

Answer 1

5.8.13.20
f(n)=n2+4
f(1)=12+4=1+4=5
f(2)=22+4=4+4=8
f(3)=32+4=9+4=13
f(4)=42+4=16+4=20

Answer 2

5,8,13,20

Explanation:

f(n)=n²+4

f(1)=1²+4=1+4=5

f(2)=2²+4=4+4=8

f(3)=3²+4=9+4=13

f(4)=4²+4=16+4=20