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Quadratic Formula and Complex Sums

Conversion between a + bi and (a, b), (r, theta), and rcistheta.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

Quadratic Formula and Complex Sums

by CK-12 //at grade
Identifying complex roots of quadratic functions with the quadratic formula, and adding and subtracting complex numbers.
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Solving Quadratic Equations with Complex Number Solutions

by CK-12 //at grade
This lesson covers solving quadratic equations when the answers are complex numbers.
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• PLIX

Quadratic Formula and Complex Sums: Vertical and Horizontal Shift 2

by CK-12 //at grade
Quadratic Formula and Complex Sums Interactive
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• PLIX

Quadratic Formula and Complex Sums: Vertical and Horizontal Shift

by CK-12 //at grade
Quadratic Formula and Complex Sums Interactive
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• Video

Adding and Subtracting Complex Numbers

by CK-12 //at grade
Provides examples of how to add and subtract complex numbers.
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• 0