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grade 11 · A2-006

Multiply complex numbers

Distribute complex factors and replace i squared with negative one before combining terms.

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Try with a hintFresh problem · seed 1160520172

Multiply \((1 + 3i)(4 + 5i)\).

13i45ii²

Give me one hint

Distribute both terms of each factor.

Choose an answer\(-11 - 7i\)\(4 + 15i\)\(-11 + 17i\)\(19 + 17i\)

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Math Lab is a working name for Ready Rung's separate math-learning product. Guided success and independent evidence are reported separately.