Question

factorise : 28xy-16x-49y+28​

Answer 1

Answer:

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

so ans is (7y-4)(4x-7)

Answer 2

Answer:

28xy = 4 x 7 x X x y

-16x  =  -4 x 4 x X

-49y  = 7 x 7 x y

28    =  4 x 7

bring terms with common numbers together

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

= (4x - 7) (7y-4)

Step-by-step explanation: