Respuesta:
A. (x-3)(y+4)
xy+4x-3y-12
B. (-6a-5)(8b-4)
-48ab+24a-40b+20
C. (2x-3y)(6a-1)
12xa-2x-18ya+3y
D. (7y+4)(2z-5)
14yz-35y+8z-20
E. (-5a-3)(-4b+2)
20ab-10a+12b-6
F. (8+2x)(3a-4y)
24a-32y+6xa-8xy
G. (2+9a)(-6b-2)
- 12b-4-54ab-18a
H. (-4a-3x)(8y-5)
- 32ay+20a-24xy+15x
