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(-1.25)×(-2/5)×(+8)-9÷(-1 1/2)^2
人气:461 ℃ 时间:2020-05-07 06:37:25
解答
(-1.25)×(-2/5)×(+8)-9÷(-1 1/2)^2
=1.25*8*2/5-9/(-3/2)^2
=10*2/5-9/(9/4)
=4-4
=0
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