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If (x + 2) and (x - 1) are factors of the expression \(Lx^{3} + 2kx^{2} + 24\), find ...

If (x + 2) and (x - 1) are factors of the expression \(Lx^{3} + 2kx^{2} + 24\), find the values of L and k.
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  • A 1 = -6, k = -9
  • B 1 = -2, k = 1
  • C K = -1, 1 = -2
  • D 1 = 0, k = 1
  • E K = 0,1 = 6
Correct Answer: Option A
Explanation:
f(x) = Lx3 + 2kx2 + 24
f(-2) = -8L + 8k = -24
4L - 4k = 12
f(1):L + 2k = -24
L - 4k = 3
3k = -27
k = -9
L = -6

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