Complex Numbers Practice Test

Front

How do you write a complex number?

Back

a + bi

Front

What does i^2 equal?

Back

-1

Front

What letter represents an imaginary number?

Back

i

Front

In the expression \( \sqrt{x} \), this symbol is called ________.

Back

radical sign

Front

What is \( \sqrt{-1} \)?

Back

i

Front

What is the real part of a complex number a + bi?

Back

a

Front

What is the imaginary part of a complex number a + bi?

Back

b

Front

What is the conjugate of a complex number a + bi?

Back

a - bi

Front

How do you add two complex numbers (a + bi) and (c + di)?

Back

(a + c) + (b + d)i

Front

How do you multiply two complex numbers (a + bi) and (c + di)?

Back

(ac - bd) + (ad + bc)i