题目内容
计算：（-3）0÷
+（-
）-1×|-4+1|-4sin260°=______．
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（-3）0÷
+（-
）-1×|-4+1|-4sin260°
=1×4+
×3-4×(
)2
=4-6-3
=-5．
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| 4 |
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=1×4+
| 1 | ||
-
|
| ||
| 2 |
=4-6-3
=-5．
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