This concept builds upon our understanding of adding roots (AddRoots) and multiplying roots (MultRoots). It appeared 5 times on this year's tests, with a median placement at question # 43.
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Number Dojo Level: 306
As a reminder, there are a couple of formulas that are important to remember:
- Adding roots: -B/A
- Multiplying roots: C/A (for quadratic), -D/A (for cubic), E/A, etc.
We'll add one formula for the sum of the roots taken two at a time: C/A (regardless of the degree of the polynomial).