Question

Factorizar:
.
.
.
1. $25m^{2}- 4n^{2}$
2. $ax-bx+cx+ay-by+cy-a+b-c$
3. $x^{3}-8$
4. $x^{9}+1$
5. $xy+5x+2y+10$

Answer 1

1. (5m)² - (2n)²  = (5m+2n) (5m-2n)