Review for test complex numbers&polynomials

(3 + 2i) + (4 - 5i)

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

(-7 + 9i) + (2 - 10i)

• -5 + i

• -5 - i

• -9 + 1

• 9 - i

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

Choose the correct answer for the operation pictured.

• 7-13i
• 7-i
• 1-13i
• 1-i

What does i² equal?

• -1

• √-1

• 1

• -√1

The expression (2 + 3i)² is equal to

• -5
• -5 + 12i
• 13
• 13 + 12i

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

• 2-19i

• 23-i

• 34+5i

• 23-i

Simplify

• (-10+6i)/17

• (1+50i)/61

• (-23+36i)/25

• (-21+33i)/34

√-36

• 6
• -6
• -6i
• 6i

What letter represents an imaginary number?

• a

• i

• j

• x