Question

Guys...plz help me for this problem

Answer 1

Using Properties of determinants

we can simplify the equation to AB=BA

Now time to find AB:

-3+2y    -3x

2-4y       2x

BA:

-3+2x   2-4x

-3y       2y

By comparing each element with the corresponding one we get 2 useful equations:

2-4y=-3y

2=y

...........

-3x=2-4x

2=x

...........

Hope this helps!!