Mini-Quiz: Proof that Product of Two Negative Numbers is Positive

1. What is the product of (−abc)(−def)?

   −abcdefSorry, not correct. Try another button. They can't be multipliedGood try, but not right. Select another answer. abcdefThat is correct. You know about multiplying negative numbers.

2. What is the product of (−a)(−b)(−c)?

   ab − cOops! Wrong answer. Re-read the question and try again. −abcCorrect. You understand the principles. abcSorry, not correct. Try another button.

3. What is the product of −(−b)(−c)?

   bcOops! Wrong answer. Re-read the question and try again. −bcThat is correct. You know about multiplying negative numbers. b − cGood try, but not right. Select another answer.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.