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kumpel [21]
3 years ago
5

HURRY!! select ALL the correct answers

Mathematics
1 answer:
Rainbow [258]3 years ago
8 0

Answer:

2nd, 3rd and 5th options are correct.

Step by step explanation:

We are asked to find which of the given operations involving complex numbers have solutions represented by point A on the graph.

We can see that point A lies on (1,-2i). Let us see which of our given expressions give us coordinates of point A.

1. (4+i)+3(1+i)

4+i+3+3i

4+3+i+3i

7+4i

We can see that our 1st option is incorrect.

2. (4+i)-3(1+i)

4+i-3-3i

4-3-3i+i

1-2i

We can see that our 2nd option is correct.

3.  (4+i)+(-3-3i)

4+i-3-3i

4-3+i-3i

1-2i

We can see that our 3rd option is correct.

4.  (4+i)+(3-3i)

4+i+3-3i

4+3+i-3i

7-2i

Upon simplifying our expression we got 7-2i which is not equal to coordinates of point A. Therefore, 4th option is incorrect.

5. (4+i)-(3+3i)

4+i-3-3i

4-3+i-3i

1-2i

Upon simplifying our expression we got coordinates of point A. Therefore, 5th option is correct indeed.



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