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Free_Kalibri [48]
3 years ago
7

I need help with multiplying fractions.

Mathematics
1 answer:
ruslelena [56]3 years ago
4 0
Go to khanacademy.com and there's a lot of instructional tutorials that show you step by step tutorials
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How do I simplify the following to "a+bi" form: (1+2i)^3
damaskus [11]

Answer:

Expand it.

(1+2i)^3 is equal to (1+2i)(1+2i)(1+2i).

Multiply everything out (being sure to multiply <em>every</em> term. (1+2i) * (1+2i) = 1+2i+2i+4i^2.

i is the square root of negative one, so i^2 is just -1. 1+2i+2i-4 is what you get from the first two, so now simplify that:

1-4 + 2i+2i = (-3+4i) and now multiply that by (1+2i):

(-3+4i) * (1+2i) = -3 - 6i +4i +8i^2.

Simplify again, and the answer is: -11-2i

Step-by-step explanation:

I hope this helps - really my only tip is don't spend time thinking about what i is, that just hurts your brain. Just remember that i^2 is equal to negative one, and treat it like regular multiplication and you will be fine.

7 0
1 year ago
Some please help FAST​
natita [175]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
How do I answer questions that I don't know
Ganezh [65]

Answer:

look it up

Step-by-step explanation:

Try and find a way to look it up.

3 0
2 years ago
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5 hundreds x 10 in standard form
Effectus [21]
5 hundreds is 500. So 500x10= 5000. Answer:5000
4 0
3 years ago
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Charlie's art class is 5 hours long. How long is his class in minutes?
Gemiola [76]

Answer:

300 minutes

Step-by-step explanation:

60 minutes in an hour

5 hours

60x5 = 300

7 0
2 years ago
Read 2 more answers
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