Midcontinent Research for Education and Learning
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Common Core Mathematics 912
Cluster
Use complex numbers in polynomial identities and equations.
Grade 912
N.CN.7.
Solve quadratic equations with real coefficients that have complex solutions.
N.CN.8.
(+) Extend polynomial identities to the complex numbers.
For example, rewrite x
^{2}
+ 4 as (x + 2i)(x − 2i).
N.CN.9.
(+) Know the Fundamental Theorem of Algebra; show that it is true for quadratic polynomials.