Question

Simplify the expression .

Answer 1

here is the answer , the work is really long... do you need that too?

`x^(15)`
`y^(12)` - 3
`x^(13)`
`y^(11)` + 3
`x^(11)`
`y^(10)`-
`x^(9)`
`y^(9)`

Explanation: