Question

How do you factor `20au - 12av -35xu + 21xv`?

Answer 1

`therefore ( 5u-3v)(4a-7x)`

Explanation:

Factor the first and second two terms individually:

`=> 4a(5u-3v ) -7x ( 5u - 3v )`

`color(red)( "Notice " )`

`4a color(red)((5u-3v)) - 7x color(red)( (5u - 3v))`

`=> (5u - 3v ) [ 4a - 7x ]`

`therefore ( 5u-3v)(4a-7x)`