Question

Find the value of k for which the given value is a solution , of the given equation : 7X² + KX - 3= O , X = 2/3 .

1
1/6
-1/6
6​

Answer 1

Answer:

Putting the value of x in equation

7(2/3)^2 +K(2/3)-3= 0

7(4/9)+2K/3-3=0

28/9+2K/3-3=0

Taking LCM

28+6K-27/9=0

1+6K=0

So,K=-1/6