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# Common Core Standard HSN-CN.B.5 Questions

(+) Represent addition, subtraction, multiplication, and conjugation of complex numbers geometrically on the complex plane; use properties of this representation for computation. For example, (-1 + √3 i)3 = 8 because (-1 + √3 i) has modulus 2 and argument 120°.

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Grade 9 Complex Numbers CCSS: HSN-CN.B.5
Select the answer choice that best represents your answer when you simplify the following expression:
$-6i(10i + 2)$
1. $4i + 12i$
2. $-16i^2 + 12i$
3. $-12i + 60$
4. $12i - 60$
Grade 12 Complex Numbers CCSS: HSN-CN.B.5
$(6+5i)-(-2+i)$
1. $4+4i$
2. $8+4i$
3. $10i$
4. $12i$
$x^2=17$
1. $pm17$
2. $pm sqrt(17)$
3. $4.12310562562$
4. $17$
$3sqrt((-25))$