Question

If one of the zeroes of the
quadratic polynomial (k-1) x2 + k
X + 1 is 2, then the value of k is:​

Answer 1

Answer:

Given : One of the zeros of quadratic polynomial (k−1)x

2

+kx+1 is −3

To find : Value of k

Solution : As −3 is one of the zeros of quadratic polynomial (k−1)x

2

+kx+1

⇒ When we substitute −3 in the polynomial , we get 0

⟹(k−1)(−3)

2

+k(−3)+1=0

⟹9k−9−3k+1=0

⟹6k−8=0

or k=

6

8

=

3

4