Exploring Operations with Complex Numbers

What does the horizontal axis represent in the complex plane?

• Imaginary numbers

• Absolute values

• Real numbers

• Complex numbers

Tags

CCSS.HSN.CN.B.4

Where would the point representing the complex number -3 + 0i be located on the complex plane?

• On the real axis at 0

• On the imaginary axis at 0

• On the real axis at -3

• On the imaginary axis at -3

Tags

CCSS.HSN.CN.B.6

How do you find the absolute value of a complex number a + bi?

• a^2 + b^2

• sqrt(a + b)

• sqrt(a^2 + b^2)

• a + b

What is the absolute value of the complex number 4 + 3i?

• 3

• 4

• 7

• 5

Tags

CCSS.HSN.CN.A.2

When adding complex numbers, which parts are combined?

• Only the real parts

• Only the imaginary parts

• Neither part

• Both real and imaginary parts separately

Tags

CCSS.HSN.CN.A.2

What is the result of adding the complex numbers -2 + 4i and 3 + 11i?

• 1 - 7i

• 1 + 15i

• 5 - 7i

• 5 + 15i

Tags

CCSS.HSN.CN.A.2

What is the result of multiplying 2i and 3 - 5i?

• 6i - 10i^2

• 6i + 10

• 6i + 10i^2

• 6i - 10

Tags

CCSS.HSN.CN.A.1

What is i^2 equal to?

• -i

• i

• 1

• -1

Tags

CCSS.HSN.CN.A.3

What is the complex conjugate of 2 - 4i?

• 2 + 4i

• -2 + 4i

• -2 - 4i

• 2 - 4i

Tags

CCSS.HSN.CN.A.3

What is the result of dividing (3 + 7i) by 8i?

• 7 + 3i / 8

• 7 + 3i

• 7 - 3i

• 7 - 3i / 8

Tags

CCSS.HSN.CN.A.3