Question

If one of the zeroes of the quadratic polynomial (k – 1 )x2 + kx + 1 is -3 ,then the value of k is

Answer 1

Explanation:

If one of the zeroes of the quadratic polynomial (k – 1 )x2 + kx + 1 is -3 ,then the value of k is =0

Answer 2

sol : we have , p(x) = ( k - 1 )x2 + kx +1

p( -3 ) =o

= ( k - 1 ) ( -3 )2 + k ( -3 ) + 1 =0

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

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

= -12k + 10 = 0

= 12k / 10

k= 5/6