Exercises: Know the Imaginary Unit and Complex Number Form

Show your work where indicated. Write all complex numbers in standard form $a + bi$.

Grade 9·20 problems·~25 min·Common Core Math - HS Number and Quantity·standard·hsn-cn-a-1

Work through problems with immediate feedback

Warm-Up: Review What You Know

Which equation has no solution in the real number system?

$x^2 = 4$

$x^2 = -1$

$x + 3 = 0$

$x^2 = 2$