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主要内容

幂的乘积和商 (整数指数)

问题

请选择一个跟以下相等的式子.
left parenthesis, start fraction, 2, start superscript, minus, 10, end superscript, divided by, 4, squared, end fraction, right parenthesis, start superscript, 7, end superscript, equals, question mark
选出正确答案:
选出正确答案:
不会做了?
不会做了?