Question

Find the value of k, for which one root of the quadratic equation kx²-14x+8=0 is 90.​

Answer 1

Explanation:

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

one root is 90

So, x=8 must satisfied to the quadratic equation.

=> k(90)²-14(90) +8 = 0

=> 8100k-1260+8 = 0

=> 8100k = 1260-8

=> 8100k=1252

=> k=8100/1252

=> k=4050/626

=> k=2025/313