pre Summative 2 revision HW

What is i?

• 1

• -1

• √-1

• √1

Which of the is a complex number?

• 2

• 4i

• 3 + 5i

• All of them

• none of them

Simplify: i³¹

• i

• -i

• 1

• -1

Simplify: i⁷²

• i

• -i

• 1

• -1

Simplify: (8 + 2i) + ( -2 - 3i)

• 10 - i

• 10 + 5i

• 6 + 5i

• 6 - i

Simplify (8 + 2i) - (2 - 3i)

• 22 - 28i

• 6 + 5i

• 6 - i

• 10 + i

Write in standard form: (5 + 3i)(5 - 3i)

• 34

• 16

• 25 - 30i + i²

• 24 - 30i

What is the conjugate of 5 - 2i?

• 5 + 2i

• -5 - 2i

• 5 - 2i

• -5 + 2i

• A
• B
• C
• D

√-36

• 6
• -6
• -6i
• 6i