Find the nth term of the following sequences

Question 1:

1,4,9,16,25
n2

Question 2:

4,16,36,64,100
4n2

Question 3:

6,12,22,36,54
2n2+4

Question 4:

10,16,26,40,58
2n2+8

Question 5:

2,9,18,29,42
n2+4n3

Question 6:

4,12,22,34,48
n2+5n2