Operations with Complex Numbers assessment

Which subtraction expression has the difference 1 + 4i?

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

Which addition expression has the sum 8 - 3i ?

(9 + 4i) + (-1 - 7i)

Subtract (3 + 2i) from (-9 - 8i).

-12 - 10i

The sum of (3 - 5i) + (-2 + 8i) is

1+3i

Multiply and simplify the product. 2i(4 - 5i) Select the product

10 + 8i

Multiply and simplify the product. (3 - 5i)(-2 + 4i) Select the product.

14 + 22i

(2 - 7i)(-1 + 4i).

26 + 15i

Multiply and simplify the product. -12i × 3i Select the product

36

Multiply and simplify the product. (8 - 5i)2 Select the product.

39-80i

(4 + 5i)(4 - 5i) =

41

The sum of 3i + 2i is equal to __i.

5

Find the sum of (-4 + i) and (10 - 5i).

6 - 4i

(3 + 8i)(3 - 8i) =

73

Add (3 - 5i) + (-2 + 8i).

Sum of real parts: 1 Sum of imaginary parts:3

Subtract (5 − 2i) − (1 + 8i). Which property allows you to write the expression as 5 − 2i − 1 − 8i?

distributive What is the real part of the difference? 4 What is the imaginary part of the difference? -10 The difference is 4 - 10i