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If the remainder on dividing x^(3) + 2x^...

If the remainder on dividing `x^(3) + 2x^(2) + kx + 3` by x - 3 is 21, find the quotient and the value of k. Hence find the zeros of the polynomial `x^(3) + 2x^(2) + kx - 18` .

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The correct Answer is:
`x^(3) + 2x^(2) - 9x - 18 is - 2,3`
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