Answers

2014-06-10T21:05:38+08:00
4 • (5x2 + 18) • (5x2 - 18)
0
How ??
(10x^2 + 6^2)
(10x^2 - 6^2)
-----------------
= 100x^4 - 36^4
36 nga XDD
2014-06-10T21:10:26+08:00