Question

(-25).(75-45)-75.(45-25)

Answer 1

`(-25).(75-45)-75.(45-25)`

`=-25.30-75.20`

`=-750-1500`

`=-2250`

Answer 2

(-25).(75-45)-75.(45-25)

= (-25) . 75 - (-25) . 45 - 75 . 45 - 75 . 25

= [(-25) . 75 - 75 . 25] - 45 . [(-25) - 75]

= 0 - 45 . (-100)

= 0 - (-4500)

= 4500