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Replace $x$ and substitute

Algebra Level 3

$\large x^2+x=1 \quad, \quad{x^6+2x^5+2x^4+2x^3+2x^2+2x+1} = \ ?$

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

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including olympiad champions, researchers, and professionals.

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by Adam Phúc Nguyễn

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