题目内容
化简a
b-
c
•(-2a-
b
c
)÷(-a-
b-
c
)等于
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2abc
2abc
.分析:根据指数幂的运算法则进行计算即可.
解答:解:a
b-
c
•(-2a-
b
c
)÷(-a-
b-
c
)=2a
-
-(-
)?b-
+
-(-
)?c
+
-
=2a1?b1?c1=2abc.
故答案为:2abc.
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故答案为:2abc.
点评:本题主要考查指数幂的运算,要求熟练掌握指数幂的运算法则,比较基础.
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