课堂探究例2变式训练2-1答案
B
课堂探究例2变式训练2-2答案
D
课堂训练选择题答案
1 | 2 | 3 |
A | A | B |
课堂训练第4题答案
(1)a2+ab
(2)x
课堂训练第5题答案
解:①选择x2+4xy+4y2、x2 - 4y2,
则x2+4xy+4xy2/ x2-4y2 =(x+2y)2/(x+2y)(x-2y)=x+2y/x-2y
②选择x2+4xy+4y2、x2+2xy,
则x2+4xy+4y2/x2+2xy=(x+2y)2=x(x+2y)=x+2y/x
③选择x2-4y2、x2+2xy,
则x2-4y2/x2+2xy=(x+2y)2/x(x+2y)=(x-2y)/x
课后提升选择题答案
1 | 2 | 3 | 4 | 5 |
C | B | D | A | B |