Question

check whether this is the solution of the equation x-2y=4 (root2 , 4 root 2)

Answer 1

x - 2y = 4

If x = √2 and y = 4√2,
satisfies this equation then it is the solution of this equation....

√2 - 8√2 = -7√2 which is not equal to 4....

Thus, it is not the solution of this equation...

Answer 2

x-2y = 4
put X = √2 and y = 4√2
√2- 2*4√2= √2 -8√2 = √2 (1-8) = -7√2 which is not equal to 4
so these are not a solution of this equation