Search SchoolNGR

Wednesday, 04 March 2026
Register . Login

If the function f(fx) = x3 + 2x2 + qx - 6 is divisible by x + 1, find q

If the function f(fx) = x3 + 2x2 + qx - 6 is divisible by x + 1, find q
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A -5
  • B -2
  • C 2
  • D 5
Correct Answer: Option A
Explanation:
x + 1 = 0, x = -1; f(x) = x3 + 2x2 + qx - 6
0 = -1 + 2 - q - 6
q = -5

Share question on: