1.

If one of the zeros of quadratic polynomial(k-1)x² + kx +1 is – 3,then find the value of k.13433​

Answer»

ANSWER:

k=

3

4

Explanation:

Given −3 is the ZERO of the polynomial (k−1)x

2

+kx+1

So −3 must SATISFY the equation (k−1)x

2

+kx+1=0

⟹ (k−1)(−3)

2

+k(−3)+1=0

⟹ 9(k−1)−3k+1=0

⟹ 9k−9−3k+1=0

⟹ 6k=8

⟹ k=

3

4



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