human
Find the nth term rule for ascending quadratic sequences in the form x² + bx + c \[
-1,4,11,20,31, \ldots
\]

When calculating the nth-term rule of this sequence, what should replace the square? nth-term rule:
\(
n^{2}+2 n \) \(\square\)
 \[
+0
\]
(no number term)
gpt
Mixes up term in a sequence and position of a term