Jawabanmu

2014-09-03T15:58:37+07:00
(5+2√3)(5-2√3) = 25 - 10√3 + 10√3 - 12 = 25-12 = 13
ko bisa 15-10akar 3,detialnya gimana ya?
5x5 bukan 15, tapi 25
oh iya salah. kurang teliti
gpp andi azis. namanya jg belajar
2014-09-03T16:06:32+07:00
=(5+2√3)(5-2√3)
=25+10√3-10√3-12
=25-12
=13