Question

person who will give correct answer will be brain. ​

Answer 1

f(x)=(k-1)x²+Kx+1=0

zero= -3

f(x)=(k-1)(-3)²+k(-3)+1

(k-1)(9)+(-3k)+1=0

9k-9-3k+1=0

6k-8=0

k=8/2

k=4