##### Notes

This printable supports Common Core Mathematics Standard HSN-CN.A.2

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## Adding, Subtracting, & Multiplying Complex Numbers

1.
Add. $(3-9i) + 4i$
1. $7-9i$
2. $3+13i$
3. $3-5i$
4. $3-13i$
2.
Evaluate. $3i + (-4+2i)$
1. $-4+5i$
2. $4+5i$
3. $-4+i$
4. $4+i$
3.
Add the complex numbers. $(-3+7i) + (3 - i)$
1. $6i$
2. $6 + 8i$
3. $-6 + 6i$
4. $6 + 6i$
4.
Subtract. $(8 + 4i) - 6i$
1. $8 + 2i$
2. $8 - 2i$
3. $-8-2i$
4. $8 + 10i$
5.
Subtract the complex numbers. $3i - (-5 + 3i)$
1. $5$
2. $-5 - 6i$
3. $5 + 6i$
4. $-5$
6.
Evaluate. $(5 - 6i) - (-3 + 9i)$
1. $2 + 3i$
2. $2 - 3i$
3. $8 - 15i$
4. $8 + 3i$
7.
Find the product. $4i(2 - 8i)$
1. $4i$
2. $0$
3. $-32 + 8i$
4. $32 + 8i$
5. $-4i$
8.
Expand and simplify. $(10-12i)(10+12i)$
1. $100-144i$
2. $244$
3. $244i^2$
4. $244i$
9.
Evaluate fully.
$(8-3i)(3+2i)$
1. $30-7i$
2. $18-25i$
3. $-6i^2+7i+24$
4. $30+7i$
10.
Multiply the complex numbers. Leave in the form $a+bi$.

$(8 - 2i) (3i)$
1. $24 - 6i$
2. $-6 + 24i$
3. $6 + 24i$
4. $24 + 6i$
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