Question

Factorise
I. (2x-y)2-11(2x-y)+28​

Answer 1

Answer:

(2x-y-7)(2x-y-4)

Step-by-step explanation:

By Middle Term Splitting, we get :-

(2x-y)² -7(2x-y) -4(2x-y) +28

(2x-y)(2x-y-7) -4(2x-y-7)

(2x-y-7)(2x-y-4)

HOPE IT HELPED YOU☺️☺️

Answer 2

Answer:

let 2x - y = a

then expression becomes a^2 - 11a -28

=a^2 - 4a - 7a +28

=a(a-4) - 7(a - 4)

=(a-4).(a-7)

put the value of a in the above expression

=(2x-y-4).(2x-y-7) Ans