Question

Find the value of k, for which one root of the quadratic equation kx²-14x+8=0 is 8.​

Answer 1

Explanation:

For the quadratic equation kx²-14x+8 = 0,

one root is 8

So, 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