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问题 计算题

对下列多项式分解因式

（1）x2（x+y）-y2（x+y）

（2）9x4-6x3+x2

答案

（1）解：原式=(x+y)(x2-y2) =(x+y)2(x-y)

（2）解：原式= x2(9x2-6x+1) = x2(3x-1)2

改错题

One day after school, on the way to home, Xiao Ming found a   1.     

water pipe in the street. He turned off a tap and splashed water  2.     

here and there. At this moment , Xiao Gang happened to be    3.      

passing by. Xiao Ming splashed him with water and make him   4.      

all wet. Xiao Ming ran away with turning off the tap.    5.     

When Xiao Gang saw this, she went over and turned off the water.  6.      

He was angry because he thought water shouldn’t wasted.     7.     

Then he went home and wrote a notice where read “ save water”  8.     

He put them up on the wall near the tap. After some time, Xiao Ming 9.     

went back and saw the notice. He felt sorry at what he had done. 10.    
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单项选择题 A1型题

不属于温里剂的方剂是（）

A.温脾汤

B.四逆汤

C.温胆汤

D.通脉四逆汤

E.理中汤
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