SOLUTION: If P(x) = x^3 + 4x^2 - 8x - 15
Use the remainder theorem to find P(-5).
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Question 370593: If P(x) = x^3 + 4x^2 - 8x - 15
Use the remainder theorem to find P(-5).
Found 2 solutions by stanbon, robertb:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If P(x) = x^3 + 4x^2 - 8x - 15
Use the remainder theorem to find P(-5).
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Using synthetic division:
-5)....1....4....-8....-15
........1....-1....-3....|..0
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P(-5) = 0
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Cheers,
Stan H.
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Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
Direct substitution gives . Thus the remainder after dividing by x+5 is 0, meaning x+5 is a divisor or factor of .
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