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jeka94
3 years ago
10

How do you simplify (4+2i)(3-i)

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
You simplify it by doing distributive property like this

(4+2i)(3-i) =12-4i+6i-2i2

now add common like numbers 

12+2i-2i2

Now on the i that is squared change the i to a -1 and get this

12+2i+2

Now again add common like numbers and get

14+2i that would be your answer
hope this helped
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Mr Thomas wants to protect his garage by installing a flood barrier. He connects 2 barriers side by side. Each barrier is 9 feet
bezimeni [28]

Answer:

36 square feet,

Step-by-step explanation:

Given:

Mr Thomas wants to protect his garage by installing a flood barrier.

He connects 2 barriers side by side

Each barrier is 9 feet long by 2 feet high ( breadth)

Question asked:

What is the combined area of the barriers ?

Solution:

Length of each barrier = 9 feet

As he connects 2 barriers side by side, the length will be doubled but height (breadth) will be unchanged.

Total length of two barriers = 9 + 9 = 18 feet

Height (breadth) of the barriers = 2 feet

By using, Area of rectangle = length \times breadth

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Therefore, combined area of the barriers is 36 square feet,

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3 years ago
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2 years ago
Which subtraction equation does the number line model show?
masya89 [10]

Answer:

Yes, C is the correct answer

Step-by-step explanation:

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5 0
3 years ago
15(d+7)=4(d-4)+11d answer? ​
Viktor [21]

Answer:

Step-by-step explanation:

Factor out to simplify:

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3 years ago
Find the combined volume of the two rectangular prisms.
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V = L * W * H
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Hope that helps and you can remember the formula and steps for future use!
5 0
4 years ago
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