Cool math Algebra Help Lessons: Factoring Polynomials - The Difference of Two Squares and the Sum and Difference of Two Cubes

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Coolmath Algebra
Factoring Lesson 6 - Special Guys (page 4 of 5)
---- This algebra lesson explains how to factor the difference of two squares and the sum
and difference of two cubes.

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Here's another one:

Factor

Rewrite it as cubes:

27y^3- 64 = ( 3y )^3 - 4^3 = ( 3y - 4 ) ( ( 3y )^2 + ( 4 ) ( 3y ) + ( 4 )^2 ) = ( 3y - 4 ) ( 9y^2 + 12y + 16 ) ... by the way, the trinomial in the final answer will never factor. NEVER!

TRY IT:

Factor

Special Guy # 3:

The sum of two cubes

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