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A polynomial in x of degree 3 vanishes w...

A polynomial in `x` of degree 3 vanishes when `x=1` and `x=-2` , ad has the values 4 and 28 when `x=-1` and `x=2` , respectively. Then find the value of polynomial when `x=0` .

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CENGAGE ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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