题目内容
计算化简：
-
+
=______．
| 6y |
| x2-y2 |
| 2 |
| y-x |
| 3 |
| x+y |
原式=
+
+
=
+
+
=
=
+
+
=
=
．
故答案为
．
| 6y |
| (x+y)(x-y) |
| 2 |
| x-y |
| 3 |
| x+y |
=
| 6y |
| (x+y)(x-y) |
| 2(x+y) |
| (x+y)(x-y) |
| 3(x-y) |
| (x+y)(x-y) |
=
| 6y+2x+2y+3x-3y |
| (x+y)(x-y) |
=
| 6y |
| (x+y)(x-y) |
| 2(x+y) |
| (x+y)(x-y) |
| 3(x-y) |
| (x+y)(x-y) |
=
| 5(x+y) |
| (x+y)(x-y) |
=
| 5 |
| x-y |
故答案为
| 5 |
| x-y |
练习册系列答案
培优口算题卡系列答案
开心口算题卡系列答案
口算题卡河北少年儿童出版社系列答案
相关题目