Find the nth term of the following sequences
Question 1:
2
,
8
,
18
,
32
,
50
2
n
2
Question 2:
3
,
12
,
27
,
48
,
75
3
n
2
Question 3:
2
,
14
,
34
,
62
,
98
4
n
2
−
2
Question 4:
-1
,
2
,
7
,
14
,
23
n
2
−
2
Question 5:
9
,
16
,
25
,
36
,
49
n
2
+
4
n
+
4
Question 6:
0
,
7
,
18
,
33
,
52
2
n
2
+
n
−
3
