Jawabanmu

2014-08-17T19:16:53+07:00
1. 5x(x-2y)
2. 4mn(3mn+1-2m^2)
3. 5(5a-2)
4. (x-4)(x+4)
5. (p+17)(p-17)
6. (5a-...b)(5a+...b) angkanya bener ga?
7.2(a^2-81)