Question

i) One of the roots of the quadratic equation 5x+ kx-7-0 is-1. Complete the following activity to find the value of k. 1 is the root of the quadratic equation 5x + kx-7-0. (14 mar (%mo substitute x= 1 in the equation. x +kx -7-0 70 (%mar k=0 :: k-L (%m​

Answer 1

Answer:

Ans) k = 1 ,

Putting the value of x = 1 in the following quadratic equation

then, 5(1)+k(1)-7-0=0

5+k-7-0=0

k-2=0

k=2

Therefore,the value of k is 2