If one of the zeros of quadratic polynomial (k-1)x² +Kx+1 is -3 then the value of k is ?

If one of the zeros of quadratic polynomial (k-1)x² +Kx+1 is -3 then

1.	If one of the zeros of quadratic polynomial (k-1)x² +Kx+1 is -3 then the value of k is ?
Answer» Given that the sum of the zeros of the polynomial kx2\xa0- 3x + 5 is 1, we have to find the value of k.We have, f(x) =\xa0kx2\xa0- 3x + 5Sum of zeros =\xa0{tex}\\frac { - \\left( \\text { coefficient of } x ^ { 2 } \\right) } { \\text { coefficient of } x } = \\frac { - ( - 3 ) } { k } = \\frac { 3 } { k }{/tex}Given, sum of zeros = 1{tex}\\therefore \\frac{3}{k}{/tex}\xa0= 1{tex}\\Rightarrow{/tex} k = 3