Listen NCERT Audio Books - *Kitabein Ab Bolengi*

38

If a quadratic polynomial f(x) is not factorizable into linear factors, then it has no real zero. (True/False)

True

Let a polynomial f(x) = x^{2} + 9

f(x) = (x + 3i)(x – 3i)

So, the zeroes are always imaginary and not real.

38

8

The sum and product of the zeros of a quadratic polynomial are and — 3 respectively. What is the quadratic polynomial?