Lessons for N.CN.C.7
Complex roots come in pairsA polynomial with real coefficients has complex roots that are conjugates of each other.Lesson
The discriminantPositive gives two, zero gives one, negative gives none that are real.Lesson
Imaginary and complex numbersEvery complex number can be written as a real part plus an imaginary part.Lesson
Printable Worksheets
Complex roots come in pairs worksheet (PDF)Printable worksheet with answer keyPreview
The discriminant worksheet (PDF)Printable worksheet with answer keyPreview
Imaginary and complex numbers worksheet (PDF)Printable worksheet with answer keyPreview