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Question

If α and β are the zeros of the polynomial f(x) = x2 + px + q, from a polynomial whose zeros are (α + β)2 and (α − β)2.

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Solution

If and are the zeros of the quadratic polynomial

Let S and P denote respectively the sums and product of the zeros of the polynomial whose zeros are and. Then,

The required polynomial of is given by

, where k is any non-zero real number.


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