It might be a very trivial question to ask but why do we get four different solutions for a quadratic equation using these two methods?
We see that factors are $(x-4)$ and $(x+2)$ so we get $x=4$ or $- 2$.
Now when we factorise in the following way we get different answers:
$x(x-2)=8$ [How can this be!?]
And we get $x=8$ or $x=10$ [How!?]
I am very confused.