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
,
1
,
6
,
13
,
22
n
2
−
3
Question 4:
6
,
15
,
30
,
51
,
78
3
n
2
+
3
Question 5:
2
,
4
,
10
,
20
,
34
2
n
2
−
4
n
+
4
Question 6:
-9
,
-6
,
1
,
12
,
27
2
n
2
−
3
n
−
8
