Jawabanmu

2014-09-08T19:03:33+07:00
1. 4xp + 4xq
2. 3x^2 - 6x. + 42x^2 + 6x
=45x^2

3. 3(5x + 6)
=15x + 18
4. 8a^2 -20a^2b
5. 3p^2 - 9p -7p + 21
= 3p^2 - 16p + 21