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Full on Factoring - College Algebra

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    >> The first thing we need to do, as always, is think about what adds to equal
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    4, and multiplies to equal 4 times 1, or 4? In this case, our numbers are 2 and
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    2. So instead of 4x, we can write 2x plus 2x, and of course the rest of the
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    expression as well. Then something interesting happens when we try to factor the
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    first two terms and the second two terms. The first two are pretty normal, we
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    pull out a 2x from the 4x squared plus 2x, but then when we get to 2x plus 1
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    Well there are no common factors that 2x and 1 have aside from 1. So that's
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    exactly what we write, 1. And then the last two terms, 2x plus 1. Conveniently,
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    this still works out perfectly and we get 2x plus 1 times 2x plus 1. Which we
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    can also write as 2x plus 1 the quantity squared.
Title:
Full on Factoring - College Algebra
Video Language:
English
Team:
Udacity
Project:
MA008 - College Algebra
Duration:
0:44
Udacity Robot edited English subtitles for Full on Factoring - College Algebra
Cogi-Admin added a translation

English subtitles

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