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Verify whether the indicated numbers are zeroes of their corresponding polynomials.

(a) Q(s) = -4s^3 + 7s^2 - 24; s = -4 and 1

1 Answer

4 votes

Answer:

  • No, incorrect

Explanation:

Given

  • Q(s) = -4s^3 + 7s^2 - 24;
  • s = -4 and 1

Verifying zeroes

Q(-4) =

  • -4(-4)^3 + 7(-4)^2 - 24 =
  • 256 + 112 - 24 =
  • 344
  • Incorrect as 344 ≠ 0

Q(1) =

  • -4(1)^3 + 7(1)^2 - 24 =
  • -12 + 7 - 24 =
  • -29
  • Incorrect as -29 ≠ 0

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