Saved Bookmarks
| 1. |
If 8 is zero of polynomial x square - 10x +k=0, then find the value of k? |
|
Answer» Put x=8 in f(x) we get 8square - 10×8 + k=0We get 64-80+k=0Or k=80-64=16So k=16 16 is the value of k. f (x) = x square - 10x + kf (8) = (8×8) - (10×8) + k 64 - 80 + k = 0 -16 + k = 0 k = 16 Putting the value of = 8 so, 10X 8 +k= 0 80+ k= 0K= - 80 |
|