Quadratic Sequences by Boxed Rockets

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Find the nth term of the following sequences

Question 1:

$4, 16, 36, 64, 100$

Question 2:

$2, 8, 18, 32, 50$

Question 3:

$13, 25, 45, 73, 109$

Question 4:

$-6, 6, 26, 54, 90$

Question 5:

$-1, 14, 37, 68, 107$

Question 6:

$-1, 7, 21, 41, 67$