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OpenStudy (anonymous):
Factor (2x-1)^3-27 as the difference of two cubes. Then simplify each factor.
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OpenStudy (anonymous):
\[(2x-1)^3-3^3\]
OpenStudy (anonymous):
\[a^3-b^3 = (a-b)(a^2+ab+b^2)\]
OpenStudy (anonymous):
Understood?
OpenStudy (earthcitizen):
Hint!: a=2x-1, b =3
OpenStudy (anonymous):
(2x - 1 - 3)([2x-1]^2 + 3(2x-1) + 9) and now simplify
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