Operations with Complex Numbers Test

Squaring a negative number always gives you what type of number?

• Positive

• Negative

• Undefined

• Imaginary

What does the letter "i" represent in mathematics?

• The square root of 1

• The square root of -1

• • - 1

• • - (-1)

What is a complex number?

• A number that includes a rational and an irrational part

• A number that includes a real and an imaginary part

• A number that includes an irrational and an imaginary part

• A number that includes all imaginary parts

In the expression a + bi, what does bi represent?

• The real part

• The imaginary part

• The complex part

• The undefined part

What type of numbers does the set of Nnatural numbers include?

• 0, 1, 2, ...

• 1, 2, ...

• ..., -2, -1, 0, 1, 2, ...

• Fractions and decimals

Which of the following is an example of an irrational number?

• 1/2

• 3.41

• π (pi)

• -2

What type of numbers are included in the set of rationals?

• Only whole numbers

• Fractions and decimals

• Imaginary numbers

• Irrational numbers

• real

• imaginary

• real

• imaginary

• 3

• -1

• i

• -i