Question

Factorise it ...plz................

Answer 1

Hey user

Here is your answer :-

( x - y )² - 4( x - y ) - 45

Let ( x - y ) be " a "

a² - 4a - 45

= a² + 5a - 9a - 45

= a( a + 5 ) - 9 ( a + 5 )

= ( a + 5 )( a - 9 )

= ( x - y + 5 )( x - y - 9 )

Thank you.