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- Concept Video2:01Introduction to Precalculus Channel0. Fundamental Concepts of Algebra / Algebraic Expressions
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- RN@RobertUpdate 2 days ago
Hi there! Thank you for your concern. At 12:40, we have -(-1)(-21) = -21, likely you omitted one negative.
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- KA@KA_3676256Update 1 week ago
At 12:40, he makes a mistake. He says the second number is -21 instead of 21 because -1x-21= 21. he says that Dz= -18 but it's really 48, changing Dz/D to -16.
0up votes•1replies - RN@RobertUpdate 1 week ago
Hi there! A new video is available! It should be up next week.
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