Question

Is the work shown below correct? Explain your answer.

(11 + 2i ) – (3 – 10i )
= 11 + 2i – 3 – 10i
= (11 – 3) + (2i – 10i)
= 8 – 8i

Answer 1

The work shown is not correct. When the distributive property was used, the -10i should have changed to +10i, making the sum 8+12i.

Explanation:

Sample Response Edge 2021

Answer 2

Explanation:

No your answer is not correct because you have made mistake in the second step

11 + 2i - 3 + 10i

(11 - 3) + (2i + 10i)

8 + 12i

Taking 4 as a common multiple

4 (2 + 3i)