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Question -

A quadratic polynomial, the sum of whose zeroes is 0 and onezero is 3, is
(a) x
2 – 9
(b) x
2 + 9
(c) x
2 + 3
(d) x
2 – 3



Answer -

(a) In a quadratic polynomial
Let α and β be its zeros
and α + β = 0
and one zero = 3
3 + β = 0
β = -3 .
Second zero = -3
Quadratic polynomial will be
(x – 3) (x + 3)
x2 – 9

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