関連ワード:  is a negative times a negative equal a positive    is a negative divided by a negative equal a positive    is a negative minus a negative equal a positive    is a negative multiplied by a negative equal a positive    does a negative multiplied by a negative equal a positive    does a negative times a negative always equal a positive    can a negative times a negative equal a positive    a negative times a negative equals a positive movie    a negative times a negative equals a positive. true false    a negative times a negative equals a positive right  
結果 : is a negative times a negative equal a positive