Question

Can someone check my work?. 1. Simplify the given expression.. (7 − 3i) • (2 − i) . 4 + i (MY ANSWER) . . 14 + 3i . . 11 − 13i . . 14 − 10i . 2. Simplify the given expression.. (−5 + 3i) • (1 − 2i) . −5 − 6i (MY ANSWER). . 1 + 13i . . 2 + i . . 4 − 5i . 3. Simplify the given expression.. (1 + 3i) + (2 − 5i) . . −1 − 2i . . 3 − 2i (MY ANSWER). . 4 − 3i . . 5 + 6i . 4. Simplify the given expression.. (6 + 2i) − (8 − 3i) . . −2 + 5i (MY ANSWER). . −2 − i . . 8 + 5i . . 8 − 5i .

Answer 1

1. (7 − 3i) • (2 − i)
It is simplified as follows:
14 - 7i  -6i - 3
11 - 13i

2. (−5 + 3i) • (1 − 2i) 
It is simplified as follows:
-5 + 10i + 3i + 6
1 + 13i

3. (1 + 3i) + (2 − 5i) 
It is simplified as follows:
1 + 3i + 2 − 5i
3 - 2i

4. (6 + 2i) − (8 − 3i) 
It is simplified as follows:
6 + 2i − 8 + 3i
-2 + 5i