Answer:
[tex] a_{ 1} = ( - 1)n + 1 {n}^{2} [/tex]
Answer
[tex]( - 1)(1) + 1 {(1)}^{2} [/tex]
[tex]0 + 1(2)[/tex]
[tex]0 + 2[/tex]
THEN
[tex]a_{1} = 2[/tex]