已知关于x的多项式ax-bx合并后结果为0，则a与b的关系是______．
∵ax-bx=（a-b）x=0，
∴a-b=0，
∴a=b，
故答案为a=b．
简对干枯、发黄无光泽、发梢分叉的头发护理的方法。
We did have a quarrel about money last night, but now we have already _____. [ ]
A. taken up
B. brought up
C. put up
D. made up
