Answer:
75
Step-by-step explanation:
Giving Q was not necessary because you aren't doing P(Q) or anything like that....
Anyways,
[tex]p(x) = x^2 + x +3\\[/tex]
Since you're doing p(8), you would replace the x's with 8s.
[tex](8)^2 + (8) + 3 = 64 + 8 + 3 =75[/tex]
So your final answer would be 75.