1. (x + 2) (x +5)
2. (2y + 3) (3y + 2)
3. (3m-n) (9m² + 3mn + n?)
4. (1 + 3m)
5. (7-5)(7m+5)
6. (2m-n)?
7. (a- 5b2)(a + 5b2)
8. (2m + 6)?
9. (x2 + 5y)
10.(n + 4) (2n-7)​