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stellarik [79]
3 years ago
7

Multiple this complex number (4-3i)^2

Mathematics
2 answers:
hram777 [196]3 years ago
6 0

7 - 24<em>i</em>

Step-by-step explanation:

(4−3i)(4−3i)(4-3i)(4-3i).

(4−3i)(4−3i)(4-3i)(4-3i)

Expand (4−3i)(4−3i)(4-3i)(4-3i) using the FOIL Method.

Apply the distributive property.

4(4−3i)−3i(4−3i)4(4-3i)-3i(4-3i)

Apply the distributive property.

4⋅4+4(−3i)−3i(4−3i)4⋅4+4(-3i)-3i(4-3i)

Apply the distributive property.

4⋅4+4(−3i)−3i⋅4−3i(−3i)4⋅4+4(-3i)-3i⋅4-3i(-3i)

Simplify and combine like terms

slava [35]3 years ago
5 0
Answer is 7-24i tehe
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This is a 5-digit number.
borishaifa [10]

Answer:

The number is 38,478

Step-by-step explanation:

* Lets explain how to find the number

- The number is 5-digit

* Ones ⇒ the last digit

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* Thousands

* Ten thousand

- The ones digit is the same as the last digit of last year's calendar year

∵ The last year is 2018

∴ The last digit is 8

∴ The ones digit is 8

- The ones digit is the same as the thousands digit

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∴ The ten thousands digit is 5 less than 8

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∵ The hundreds digit is empty

∴ The hundreds digit is 4

* <em>The number is 38,478</em>

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Answer:

Yes, 30.8 is the value of x. I also double-checked by plugging 30.8 into the right side as well.

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Step-by-step explanation:

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