Midcontinent Research for Education and Learning
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Common Core Mathematics 912
Cluster
Perform arithmetic operations with complex numbers.
Grade 912
N.CN.1.
Know there is a complex number
i
such that
i
^{2}
= − 1, and every complex number has the form
a + bi
with
a
and
b
real.
N.CN.2.
Use the relation
i
^{2}
= −1 and the commutative, associative, and distributive properties to add, subtract, and multiply complex numbers.
N.CN.3.
(+) Find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.