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YouTubeMichaelMaths
The Cubic Formula (Cardano's Method)
Everyone knows the exact solution for a quadratic, but how about the cubic? There is indeed a cubic formula that's not very hard to work with if you are comfortable with nested roots and complex numbers. The cubic is shifted so that the POI is on the y-axis (depressed cubic), which can then be solved given a certain pairing with the perfect ...
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Real Diamond vs. Cubic Zirconia: How to spot the difference in four easy steps. #antiquejewellery
YouTubeAntiques Roadshow PBS
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