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College Algebra  /  Alg 184  ·  Atom · ~20 seconds

Adding and Subtracting Complex Numbers

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Complex numbers add and subtract by combining real parts with real parts and imaginary parts with imaginary parts.

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(3 + 2i) + (1 − 5i) = 4 − 3i — the same like-terms discipline that collects polynomials, with i marking the like kind. Nothing crosses the aisle.

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