関連ワード:  a negative number times a negative number is    a negative number divided by a negative number is    a negative number times a positive number is    a negative number multiplied by a negative number is    a negative number divided by a positive number is    is a negative number multiplied by a negative number positive    the sign of a positive number divided by a negative number is always    what does a negative number times a negative number equal    if a negative number is multiplied by a negative number    what is a minus number times a minus number  
結果 : a negative number times a negative number is