Imaginary and Complex Numbers Adding Subtracting

The complex conjugate of 4 + 3i is

• 3 + 4i

• 3 - 4i

• 4 - 3i

• 4 + 3i

What is the standard form for a complex number?

• -8i

• a + bi

• bi + a

• -8i + 8

Solve for x: 

• x = {-4, -1}

• x = {-1, -4}

• x = {2+i, 2-i}

• x = {-2+i, -2-i}

Simplify

(12 - 4i) + (-2 + 8i)

• 8 + 104i

• 10 + 4i

• 14 - 4i

• 10 - 12i

Simplify.

• -5i

• 5

• 5i

• -5

The complex conjugate can be found by...

• Changing the sign of both a and b

• Changing the sign of a

• Changing the sign of b

• Switching the a and b values

What is the result of adding Z1 and Z2, where Z1 = 3 + 2i and Z2 = -4 + i?

• -1 + 3i

• -1 - 3i

• 1 + 3i

• 1 - 3i

What is the resulting complex number when Z1 and Z2 are added as vectors?

• Z1 + Z2

• Z1 - Z2

• Z2 - Z1

• Z1 * Z2

What is the representation of the complex number 7 + i on an argand diagram?

• 7 units to the right, 1 unit up

• 7 units to the left, 1 unit down

• 7 units to the right, 1 unit down

• 7 units to the left, 1 unit up

What is the resulting complex number when Z1 and Z2 are subtracted as vectors?

• Z1 + Z2

• Z1 - Z2

• Z2 - Z1

• Z1 * Z2