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negative number times a negative number equals
negative number divided by a negative number equals
positive number times a negative number equals
negative number divided by a positive number equals
negative number divided by a negative number is
negative number times a positive number is
a negative number times a negative number is
a negative number multiplied by a negative number is
why does a negative number times a negative number
why is a negative number times a negative number positive
結果 : negative number times a negative number equals