1.幾個(gè)有理數(shù)相乘,當(dāng)積為負(fù)數(shù)時(shí),負(fù)因數(shù)的個(gè)數(shù)有奇數(shù)個(gè)( ) 2.奇數(shù)個(gè)負(fù)因數(shù)相乘,積為負(fù)( )

1.幾個(gè)有理數(shù)相乘,當(dāng)積為負(fù)數(shù)時(shí),負(fù)因數(shù)的個(gè)數(shù)有奇數(shù)個(gè)( ) 2.奇數(shù)個(gè)負(fù)因數(shù)相乘,積為負(fù)( )
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為什么?請(qǐng)說(shuō)明原因!什么叫奇數(shù)個(gè)?我不太理解!

數(shù)學(xué)人氣：707 ℃時(shí)間：2019-08-18 05:46:45

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