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allochka39001 [22]
3 years ago
9

I'm taking a test and it's really important that I pass it because I'm already failing the class. Please help me I have no idea

how to do it. The test has a time limit, everything has to be submitted by 12:25 at the latest. Please show the work if you can.
Simplify the expressions
1. (1+2i)(5-5i)
2. (1+2i)-(-2-2i)
3. (1+2i)+(2-i)
4. (6i)(-5i)
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

1. 15+5i

2. 3+4i

3. 3+i

4. 30

Step-by-step explanation:

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