Review — Difficulty 4/10
Algebra II · Honors · Complex numbers (intro)
Review skills for this standard. Write answers where shown.
Together with a parent
1. (10 + 2i) + (8 − 5i) = ___ 2. (9i)(−2i) = ___ 3. Plot 9 − 4i on the complex plane. ___
Written review
1. (12 + 2i) + (10 − 5i) = ___ 2. (11i)(−1i) = ___ 3. Plot 11 − 4i on the complex plane. ___ 4. Multiply: (10 + i)(10 − i) = ___ 5. Solve x² + 13 = 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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