Answers

2014-07-22T21:37:16+08:00
9e^2 - 25  
25k^2 -64
b^2 - 121
25q^4 -36

0
yey! thanks but where are numbers 5-8? :) if it's ok with you, can you please answer it as well?
wow ha
49m^2-25n^2
2014-07-22T22:16:13+08:00
5. 49m^2-25n
6. 81-s^2t^2-4s^4t^4 
7. 10u^4-uvw^4-9vw^4
8. 16b^4-2,401

0
yey! thanks for the help
wlang anuman.. :)