Jawabanmu

2014-08-28T20:19:59+07:00
4-√2 / 4+√2 = 4-√2 / 4+√2 x 4-√2 / 4-√2 = 16-8√2+2/16-2 = 18-8√2/14 = 9-8√2/7
2014-08-28T20:44:26+07:00