Cubic Formula Proof Step 1: Removing x^2 term via PQ Substitution

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In this video I go over the first step in deriving the Cubic Formula, which is to eliminate the x^2 term from the Cubic Equation by using the PQ Substitution method. This allows us to later apply Vieta's substitution to obtain a quadratic formula, which we can solve. https://youtu.be/2OmDtnfdNdc - summary - playlist - notes

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This one, took me a moment to grasp where you were going, with the substitution and then it clicked. I will go back and start this series at the beginning. Well done.

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Great to hear! I hope you like the series.

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