Solving Quadratic Equations by Factoring

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This video explains how to solve quadratic equations by factoring.

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I completely missed something. how does 3x(1) = -4x? How did the 3x suddenly become -3x when you changed +1 to -1? You said find the sum but mention how 3x*7 is 21. So which is it. Add or multiply?

CarlosHernandez-wuiq
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This video was really helpful, thanks!

wild_phil
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I love how in all the videos they mention "as we've shown in previous videos..." and never is there a link to those videos, so screw you student.

jefferylegere