Question

if one zero of the polynomial 3x²+12x -k is reciprocal of the other then the value of k is

Answer 1

Step-by-step explanation:

Let,

1. x -1 =0
2. x = 0 +1
3. x = 1
4. 3x^2 + 12x- k
5. A.t.q
6. 3 (1)^2 + 12 (1) - k
7. 3×1×1+12×1 -k
8. 3 + 12 - k
9. 15 - k = 0
10. k = 0 -15
11. k = -15