0B2 Week 2 Review Session - Complex Arithmetic

What is the imaginary part of -3-4i

• -4

• 4

• -4i

• -3

• 64i

• 8i

• -8i

• -64i

Compute (-2i)(-3i)

• 6

• 6i

• -6i

• -6

Compute (-7+2i)+(3+10i).

Note: The brackets are not required here. I only put them there for clarity.

• -10-12i

• -4+12i

• -41-64i

• -4+8i

Compute (-7+2i)(3+10i).

Note: In this case, the brackets do need to be there.

• -41-64i

• -10+21i

• -41+20i

• -21+20i

Which of the following is the complex conjugate of 11-2i?

• -11-2i

• 11+2i

• -11+2i

• 11-2i

• 72-54i

• 90

• 72+54i

• 72