Exploring Multiplying Imaginary Numbers

What is the value of i squared?

• 1

• -1

• 0

• i

Tags

CCSS.HSA.APR.A.1

When multiplying x by 3x, what is the result?

• 3x

• 6x

• 3x^2

• x^2

Tags

CCSS.HSN.CN.A.1

What should you replace i squared with in a multiplication problem?

• -1

• 1

• i

• 0

Tags

CCSS.HSN.CN.A.2

In the expression 2i + 3i, what is the combined result?

• 5

• 5i

• 6i

• i^2

Tags

CCSS.HSN.CN.A.2

What is the result of 4i times i?

• -4i

• 4

• 4i^2

• -4

Tags

CCSS.HSN.CN.A.2

Which method involves drawing a grid to multiply complex numbers?

• Double Distributive Method

• Box Method

• FOIL Method

• Rainbow Method

Tags

CCSS.HSN.CN.A.2

What is the result of 3i times 2i?

• 6i

• 6

• -6

• 6i^2

Tags

CCSS.HSN.CN.C.8

In the expression (2 + 5i)^2, what is the first step?

• Add 2 and 5i

• Multiply the entire expression by itself

• Multiply 2 by 5i

• Square each term individually

Tags

CCSS.HSN.CN.A.2

What is the result of combining 10i and 10i?

• 10

• 20i

• 10i^2

• 0

Tags

CCSS.HSN.CN.C.8

What does (2 + 5i) times (2 + 5i) simplify to?

• 4 + 25i^2

• 4 + 10i + 25i^2

• 4 + 10i + 25

• 4 + 10i

Tags

CCSS.HSN.CN.C.8