Question

How do you factor by grouping `12xy-28x-15y+35`?

Answer 1

To factorise this expression, we make groups of 2

`(12xy-28x)-(15y-35)`

`= 4x(3y-7) - 5(3y - 7)`

`3y - 7` is common to both the terms

`=color(green)( (3y - 7)(4x - 5)`