Exploring Operations with Complex Numbers

What is the value of i squared?

• i

• -1

• -i

• 1

Tags

CCSS.HSN.CN.A.1

When adding complex numbers, what should you do with the parentheses?

• Multiply them

• Keep them

• Divide them

• Remove them

Tags

CCSS.HSN.CN.A.2

What is the result of (3 + 4i) + (-2i + 5i)?

• 7 + 9i

• 7 + 3i

• 3 + 7i

• 3 + 3i

Tags

CCSS.HSN.CN.A.2

How do you handle i squared when it appears in a multiplication problem?

• Replace it with -1

• Replace it with 1

• Ignore it

• Replace it with i

Tags

CCSS.HSN.CN.A.2

What is the result of 5i * (4 + 3i)?

• 20i + 15i

• 20i + 15

• 20i - 15

• 20i + 15i^2

Tags

CCSS.HSN.CN.A.2

What is the first step in multiplying two binomials involving complex numbers?

• Add the real parts

• Distribute the negative

• Add the imaginary parts

• FOIL method

Tags

CCSS.HSN.CN.A.2

What is the result of (3 + 2i) * (2 + 2i)?

• 6 + 8i + 4i^2

• 6 + 4i + 4i^2

• 6 + 4i - 4

• 6 + 8i - 4

Tags

CCSS.HSN.CN.C.8

What is the standard form for complex numbers?

• ab + i

• a - bi

• a + bi

• ai + b

Tags

CCSS.HSN.CN.A.1

When adding or subtracting complex numbers, what typically does not show up?

• Real part

• Imaginary part

• i squared

• Negative sign

Tags

CCSS.HSN.CN.A.2

What should you remember to do when writing the final answer for complex numbers?

• Distribute the negative

• Write the imaginary part first

• Write the real part first

• Combine like terms

Tags

CCSS.HSN.CN.A.1