A.
| B.
| C.
| D.
|
2ab |
a+b |
2×100a×100b |
100a+100b |
200ab |
a+b |
a+b |
2ab |
100a+100b |
2×100a×100b |
a+b |
200ab |
1 |
100 |
a+2b |
a+b |
100a+2×100b |
100a+100b |
a+2b |
a+b |
2 |
a+b |
2 |
100a+100b |
2 |
100(a+b) |
1 |
100 |
10a2b |
4ab2 |
y+3 |
x |
A.扩大3倍 | B.缩小3倍 | C.不变 | D.无法确定 |
2x |
x+y |
A.扩大为原来的2倍 | B.扩大为原来的4倍 | ||
C.不变 | D.变为原来的
|
A.
| B.(
| ||||||||
C.
| D.
|
y |
x+y |
A.不变 | B.扩大2倍 | C.缩小2倍 | D.缩小4倍 |
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