Question

Factorise 2(x-y)-a(y-x)​

Answer 1

( a + 2 ) ( x - y )

Explanation:

2 ( x - y ) - a ( y - x )

= 2 ( x - y ) + a ( x - y )

= ( 2 + a ) ( x - y )

= ( a + 2 ) ( x - y )

Hence factorised.