1.
Factoriza:
 (x – 3)y – (x – 3)z
 x(x + 6) + y(x + 6) – z(x + 6)
 x4(3a – 5b) + x(2a – 5b) – 2a + 5b
 ap + aq + bp + bq + cp + cq
 nx + n2 + xy + ny
 mx + x2 + mb + bx
 ax + bx + cx + ay + by + cy

2.
Factoriza:
 a2 – an + ap – np
 m4 + m3 + m + 1
 a2 + an + ap + np
 m + n + x(m +n)
 x(3a + 2b) + 3a + 2b
 (c + 1)(a + 1) + (a + b)(c + 1)
 3b(2x – 3) + 2x – 3