Jawabanmu

2014-08-16T19:54:05+07:00
( 7 ( 2 - akar8 ) + 11 ( 2+ akar8 ) ) /  ( 2 + akar8 ) x ( 2 - akar8 )
= ( 14 - 7 akar 8 + 22 + 11 akar 8 ) /  (4 - 8)
= (36 + 4 akar8) / -4
= - 9 - akar 8