Answer:
-22
Step-by-step explanation:
[tex]n {}^{2} - n - 7 \\ { - 3}^{2} + (8 \times - 3) - 7 \\ 9 + - 24 - 7 \\ - 31 + 9 \\ - 22[/tex]
10
n^2+8n-7
-3^2+8(-3)-7
9+8(-3)-7
9+-24-7
17-7
