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If P(x) = x ^ 2 + x + 3 and Q(x) = 4x ^ 2 - 3 find P(8) .

User Phil H
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1 Answer

5 votes

Answer:

75

Explanation:

Giving Q was not necessary because you aren't doing P(Q) or anything like that....

Anyways,


p(x) = x^2 + x +3\\

Since you're doing p(8), you would replace the x's with 8s.


(8)^2 + (8) + 3 = 64 + 8 + 3 =75

So your final answer would be 75.

User Moira
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6.6k points