Review — Difficulty 5/10

Algebra II · Honors · Complex numbers (intro)

Review skills for this standard. Write answers where shown.

Together with a parent

1. (11 + 2i) + (9 − 5i) = ___ 2. (10i)(−3i) = ___ 3. Plot 10 − 3i on the complex plane. ___

Written review

1. (13 + 2i) + (11 − 5i) = ___ 2. (12i)(−2i) = ___ 3. Plot 12 − 3i on the complex plane. ___ 4. Multiply: (11 + i)(11 − i) = ___ 5. Solve x² + 14 = 0 in ℂ: x = ___ 6. Real part ___ , imaginary part ___

_See printable PDF for diagram._

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Skills checklist

• [ ] Adds, subtracts, and multiplies complex numbers
• [ ] Uses i² = −1 correctly
• [ ] Plots complex numbers in the plane

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