Answer:
The correct answer is a) [tex]a^{2}[/tex][tex]+1[/tex]
Because if you would just put everything in a equation, it would look like this: [tex]a^{2} + a + 1 + 1 -a -1[/tex]
and if you would just add that together you would recieve [tex]a^{2}[/tex][tex]+1[/tex].
