P(x) = P(-2)
P(-2) = 3(-2)^2 + 5(-2)-8
= 3(4) + (-10) - 8
= 12 + (-10 -8)
= 12 + (-18)
= 12 - 18
= - 6
P(-2) = -6
(divided on both sides by -2)
Answer:
P = 3
(btw i am not sure if this is the answer you are looking for. Please clarify ths objective of this equation. What are we looking for? Are we solving for "P" ?)