方程式....

Answer: x=5

First of all, we can see that (x-4) is part of the formula, so x has to be > or = to 4.
This is really important.

Check:
the below also is 括左既係開方
(3*5+10)-(5-4)=(2*5+6)
(25)-(1)=(16)
5-1=4

2006-11-01 11:00:03 補充：
no.. square root of a negative number yield to an error... you can try it with a calculator.. so x-4 has to greater or = 0; hence, x has to greater or = to 4

3x+10-x+4=2x 3x-x-6x=6-10-4 -4x=-8 x=-8除-4 x=2