Question

计算：

Answer 1

          

解析试题分析:⁴
解：            
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考点：整式与幂的运算
点评：该题考查学生对整式幂和实数负数次幂的运算，学生要注意整式的幂是括号内各项的幂相乘，而负数次幂相当于倒数，对数的符号不起作用。