Completely Factored - Visualizing Algebra

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Here are some factor pairs for negative 24. I made the first factor negative in
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each of the pairs. I know that none of these pairs could sum to negative 5 since
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the greater number is in the right hand column. All these sums would be
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positive. If I make the second factor negative, I can see that the sum of each
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of these factor pairs would end up being negative. So, the factor pair of
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negative 8 and 3 sum to negative 5. We can rewrite our negative 5x and negative
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8x and positive 3x using these two factors. When our factor pairs are negative
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and positive, it's generally easier to list the negative term first. This makes
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our factoring by grouping a little bit easier. We can factor our 4x from the
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first two terms, and a positive 1 from the second two terms, since the only
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factor that these two terms share is 1. I used brackets around this part of the
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factoring because I have parentheses inside. For this inside bracket portion, we
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have common factors of 3x minus 2, so we can factor that out, leaving us with
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our final complete factored form.
Title:
Completely Factored - Visualizing Algebra
Video Language:
English
Team:
Udacity
Project:
MA006 - Visualizing Algebra
Duration:
01:01
 Udacity Robot edited English subtitles for Completely Factored - Visualizing Algebra Cogi-Admin added a translation

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