1.

If α, β are the zeros of the polynomial f(x) = x2 – p (x + 1) – c such that (α + 1) (β + 1) = 0, then c =A. 1B. 0C. – 1D. 2

Answer»

Given

f(x) = x2 – p (x + 1) – c

α and β are the zeros

Then,

f(x) = x2 – p (x + 1) – c

= x2 – px – (p + c)

As

(α + 1)(β + 1) = αβ + α + β + 1

= – p – c + p + 1

= 1 – c

So,

The value of c,

c = 1


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