题目内容
求值:(0.0081)-
-[(-9)2×(
)0]
×[
×81-0.25+(3
)-
]-
-27-
= .
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考点:有理数指数幂的化简求值
专题:函数的性质及应用
分析:直接利用分数指数幂的运算法则求解即可.
解答:
解:(0.0081)-
-[(-9)2×(
)0]
×[
×81-0.25+(3
)-
]-
-27-
=[(0.3)4]-
-[(-9)2]
×[
×(34)-0.25+[(
)3]-
]-
-(33)-
=
-9×[
+
]-
-
=3-9
=-6.
故答案为:-6.
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=[(0.3)4]-
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=
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=3-9
=-6.
故答案为:-6.
点评:本题考查分数指数幂的运算法则的应用,考查计算能力.
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