Question

If x= 2root 2 and y = root 2 satisfy the libear equation 3x +ky = 4root 2, find k

Answer 1

x= 2 root 2 y= root 3
3x + ky= 4 root 2
3(2 root 2) + k root 2= 4 root 2
6 root 2 + k root 2 = 4 root 2
K= 4 root 2 - 6 root 2 divided by root 2
= -2 root w
Hence k = - 2 root 2