If the function f(x) =\(x^3+ 2x^2+ qx - 6\) is divisible by x + 1, find q

  • A -5
  • B -2
  • C 2
  • D 5
jamb 1997mathematics

The correct answer is A. -5

x + 1 = 0, x = -1; f(x) = x

+ 2x

+ qx - 6

0 = -1 + 2 - q - 6

q = -5

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