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| 1. |
Find the value of k, for which one root of the quadratic equation kx²-14x+8=0 is 8. |
| Answer» TION:For the quadratic equation kx²-14x+8 = 0,one root is 8SO, x=8 MUST SATISFIED to the quadratic equation.=> k(8)²-14(8) +8 = 0=> 64k-112+8 = 0=> 64k = 112-8=> 64k=104=> k=104/64=> k=26/16=> k=13/8=> k=19/9 | |