题目内容
-
a2b-(-0.875ab2)+(-
ab2)-0.3a2b.
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原式=-
a2b+
ab2-
ab2-
a2b
=(-
-
)a2b+(
-
ab2)
=-
a2b.
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| 3 |
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=(-
| 4 |
| 3 |
| 3 |
| 10 |
| 7 |
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| 7 |
| 8 |
=-
| 49 |
| 30 |
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