関連ワード:  is a negative times a negative equal a negative    does a negative times a negative equal a negative    is a negative divided by a negative equal a negative    is a negative minus a negative equal a negative    does a negative divided by a negative equal a negative    does a negative multiplied by a negative equal a negative    does a negative times a negative times a negative equal a positive    does a negative number minus a negative number equal a negative number    does a negative times a negative equal a positive    is a negative times a negative a negative  
結果 : is a negative times a negative equal a negative