Question

Answer 1

`a, = (x-y)^2 - 25`

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

`b, = (2x-3)^2 - y^2`

`= (2x-y-3)(2x+y-3)`

`c, = (x-y)(x+y) + 2(x+y)`

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

`d, 2(2x-y) - (2x-y)^2`

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

Answer 2

a: =(x-y)^2-25

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

b: =(2x-3)^2-y^2

=(2x-3-y)(2x-3+y)

c: =(x-y)(x+y)+2(x+y)

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