Complex Numbers

What is the imaginary part of the expression (4 + 2i)?

• 4

• -4

• 2

• -2

What is the real part of the expression (- 5 + 9i)?

• 5

• -5

• 9

• -9

Simplify

• 5

• -5

• 5i

• 25i

Simplify

• 6i

• -6

• 6

• 36i

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

• 2 + 6i

• 8 +6i

• 2 - 2i

• 8 - 2i

Simplify: ( - 4 + 5i) - (3 +i)

• -1 + 6i

• -7 + 4i

• -7 +6i

• -1 +4i

Simplify: ( 6 - i) + (-9 +i)

• -3

• 15

• -3+2i

• 15+2i

Simplify: (11 - 6i) - (-7 - 2i)

• 18 - 8i

• 4 - 8i

• 18 - 4i

• 4 - 4i

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

• -7 +2i

• 23 + 2i

• 23 - 2i

• -7 - 2i

Simplify: (-2 - i)(7 - 4i)

• -18 - 15i

• -10 -15i

• -10 + i

• -18 + i