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人們平時習慣把一平方當作一平米,其實不一樣的,一平方可以代很多組織,你自己要多注意哦.
一般人們說平方就是指平方米
-(1\3)的平方\是1/3的平方的相反數(-1/3)的平方就是(1/3)的平方 ∴-(1/3)^2=-(-1/3)^2
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