Derive Formulas: Factoring a Sum or Difference of Cubes (Long Division)

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This video derives the formulas for factoring a sum or difference of cubes using long division.
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how do you get 0a2b and oab2 in the first long division question

avacameron
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Surface of revolution of parabola y^2=4ax on revolution about x=0,
from x=0 to x=a
From your video 9 years ago.

SR-kdwi