化簡....

√12/147=√4*√3/√49*√3=2√3/7√3=2/7

None of the above.

2008-01-04 00:31:31 補充：
For supplyment the one below,if the question is (√12)/147 which equals to (2√3)/147, not 2/(49√3).

√12/147 = 2/7 only if the original question is √(12/147).
It seems that the question is now (√12)/147, which is equal to 2/(49√3), still no answer.