Question

10. If the sum of the zeroes of the polynomial 2x ^ 3 - 3k * x ^ 2 + 4x - 5 is 6, then k=.... ()A) -1B) 9C) 4D) O​

Answer 1

Answer:

The sum of the zeroes of the equation ax

3

+bx

2

+cx+d is −b/a

Here the equation is 2x

3

−3kx

2

+4x−5

⇒ Sum of roots=3k/2

⇒ 3k/2=6

⇒ k=4