Question

2. Factorise completely the expression
2x² - 4x- 2xy+ 4y ​

Answer 1

the first method is method of grouping so u say (2x - 4x) -(2xy+4y) so u already know that the 2x is square so no mean to put it there so u say 2x(x- 2)-2y (x+2) so u see the bracket are the same so u take one (x- 2) (2x -2y) done

Answer 2

`2(x-2) ( x-y)`

Explanation:

Add and subtract the second term to the expression and factor by grouping.