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solving a cubic equation by completing the cube

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This cubic equation is from Brilliant x^33x^23x1=0 . Check out their courses to learn more about algebra, cubic equations, and Lagranges Resolvent via this link https://brilliant.org/blackpenredpen/ That link also gives you a 20% discount on their annual premium subscription. Thanks for checking it out.

Hello, 0:00
First way: 0:56
Second way: 3:36

Thanks to Christopher Musso
1:59 "three square root of X"
2:08 "three square root of 2"
Should have said "cube root of 2" for both instances.

Lagrange Resolvent: https://brilliant.org/wiki/solvingcu...

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