Exercises: Add, Subtract, and Multiply Complex Numbers

Show your work. Write all answers in standard form $a + bi$.

Grade 9·21 problems·~30 min·Common Core Math - HS Number and Quantity·standard·hsn-cn-a-2

Work through problems with immediate feedback

Fluency Practice

Compute $(1 + 2i)^2$ .

$1 + 4i^2 = 1 - 4 = -3$

$5$

$-3 + 4i$

$1 + 4$