Graded Homework - Quadratics & Complex Numbers

i⁷

• i
• -i
• 1
• -1

Tags

CCSS.HSN.CN.A.2

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify.

• -5i
• 5
• 5i
• -5

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

Tags

CCSS.HSN.CN.A.1

Which of the following is NOT a method for solving quadratics?

• Factoring
• Calculating zeros on the calculator
• Completing the square
• Multiplying by the conjugate

Tags

CCSS.HSA-REI.B.4B

Identify the zeros of the graph

• (0, -3)
• (-1, 0) and (3, 0)
• (1, -4)
• None of the above

Tags

CCSS.HSF-IF.C.7A

What is the simplified form of (-6i)(3i)

• -18

• -18i

• 18

• -18i²

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

• 5i

• -5i

• 5

• -5

Simplify the following:
(2x-8)²

• 4x-16
• 4x²-64
• 2x²-16x+64
• 4x²-32x+64

Simplify to lowest terms.

• x=1
• x=(3±7)/4
• x=10/-4
• x=(3±√43)/-4