Saved Bookmarks
| 1. |
If one zero of the polynomial `2x^2-5x -(2k + 1)` is twice the other, then find both the zeroes of the polynomial and the value of `k` |
|
Answer» eqn= `2x^2-5x-(2k+1)` let one root be `alpha` then other root is `2alpha`. sum of roots=`3alpha=5/2` `alpha=5/6` `2alpha=5/3` product of roots=`25/18=(-2k-1)/2` =`25/9=-2k-1` =k=`-17/9` |
|