briannafinley96 briannafinley96
  • 09-09-2020
  • Mathematics
contestada

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

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StreetFighterLan123
StreetFighterLan123 StreetFighterLan123
  • 09-09-2020

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.

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