根据二次根式有意义的条件可得，x-2≥02-x≥0，
解得：x=2，
∴y=3，
故可得2xy=12．
故答案为：12．
解关于x的不等式x2﹣（a2+a）x+a3＞0（a为参数）．
The famous scientist, _____ a dinner party will be held tonight, is to arrive soon.[ ]
A. in honor or him
B. in his honor
C. in whose honor
D. in which honor
