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IgorLugansk [536]
4 years ago
11

Please Help! Find the product of (x + (3+5i))2.

Mathematics
1 answer:
-Dominant- [34]4 years ago
5 0
(x + (3 + 5i))*(x + (3+5i))
= x^2 + x(3+5i) + x(3+5i) + (3 + 5i)^2
= x^2 + 2x(3+5i) + 9 + 6(5i) + 25i^2
= x^2 + 6x +10xi + 9 + 30i - 25
= x^2 + 6x + 10xi + 30i - 16
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Minchanka [31]

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4 0
3 years ago
Find the value of x. Round the answer to the nearest tenth if needed.
horrorfan [7]
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8 0
4 years ago
Solve for x. <br><br> −1/5x≥−2
Rzqust [24]

Answer:

x ≤ -10

Step-by-step explanation:

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7 0
4 years ago
In which different ways can 388 be written as the product of two positive integers? Choose all answers that are correct
Helen [10]

Answer: Everything except 3 * 129

Step-by-step explanation:

You can break 388 in half twice in order to find the answer.

Since 388/2 = 194, then 194 * 2 = 388

Since 388/4 = 97, then 97 * 4 = 388

Do note that 3 and 129 are both odd. Two odd factors can never make an even product. So that is out immediately.

Hope this helped a little bit, I tried to be quick with the explanation because I know how annoying those online things are. If you need anything explained more, just let me know.

4 0
1 year ago
Donnel practiced the piano 3 hours longer than Marcus. Together they practiced the piano for 11 hours. How many hours did each b
andriy [413]
Here is the equation: x+(x+3)=11 ⇒x+x+3=11


You need to get "x" by itself so minus 3 from each side

x+x+3-3=11-3 ⇒ x+x=8 ⇒ 2x=8

Divide 8 by 2

8 ÷ 2=4

x=4

So each 4 is equivalent to 4 

Lets check:

4+(4+3)=11 ⇒ 4+4+3=11 ⇒ 11=11

So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7 
4 0
4 years ago
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