Jawabanmu

2014-09-03T11:15:43+07:00
= (√5+√3)^2 + (3√2+√8)^2
= (√5+√3)(√5+√3) + (3√2+√8)(3√2+√8)
= (5+√15+√15+3) + (18+3√16+24√16+8)
= (8+2√15) + (26+27√16)
= (8+2√15) + (26+108)
= (8+2√15) + 134
-(8+2√15) = 134
-(4+√15) = 67
2014-09-03T11:16:46+07:00
(5 + √15 + √15 + 3 ) + ( 18 + 12 + 12 + 8)
= 8 + √30 + 50
= 58√30
√15 + √15 = 2√15 bukan √30
iya benar itu, salah...