Question

if one zero of a polynomial (k-1)x2+kx+1 is 3 the find the k

Answer 1

I can solve this question

Answer 2

(K-1)×2+KX+1

One zero of the polynomial is 3

(K-1)×2+3K+1=0

2K-2+3K+1=0

5K=1

K=1/5