Please help 1. (2x 1)(x - 6)
2. (2y - 3)(y 2)
3. (5y - 2)(3y - 1)
4. (5z 1)(5z -1)
5. (2x 3)(2x 3)
6. (x y)(x y)
7. (a - b)(a - b)
8. (a b)(a b)
9. (a 2b)(a 3b)
10. (2c - d)(3c d)
11. (x - 4y)(x 4y)
12. (2z 5w)(3z - 4w)
13. (5y 12x)(7x - 2y)
14. (5k 2m)(3p 4s)
15. (9x - 5y)(2x 3y)
16. (x3 - 3x2 2x - 4)(3x - 1)
17. (3y2 - 9y 4)(4y 5)
18. (3x2 - 4xy y2)(4x 3y)
19. (4a2 - 3ab - 2b2)(2a - 5b)
20. (x - y)3