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Oduvanchick [21]
2 years ago
15

100 POINTS!!!!! WILL GIVE BRAINLIEST!!!!!!! Show that: (a + bi)^2 = (a + b)(a − b) + 2abi

Mathematics
1 answer:
inna [77]2 years ago
8 0

Step-by-step explanation:

(a+bi)2

=a2 +2abi +b2i2

=a2 +2abi + b2. (-1)

=a2 -b2 +2abi

Answer = (a+b(a-b) +2abi

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Does anyone know this
mafiozo [28]

Answer:

A

Step-by-step explanation:

To figure out whether a graph is a function, you need to use the line test.  The line test is where you pass a vertical line over the graph.  If the vertical line crosses the graph more than once, the graph is not a function.  You can use your pencil as a vertical line.

Graph 1 is not a function because the vertical line will cross the graph twice.

Graph 2 is a function because the vertical does not cross the graph twice.

Graph 3 is not a function because the vertical line will cross the graph twice.

6 0
3 years ago
What is the value of X
dmitriy555 [2]

Answer:

im prolly wrong but i think 90 XDDDD

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Sandi had the following problem on her math test:6•4+2÷2-7
Yuki888 [10]
Answer: 18

Explanation:
24+1-7
3 0
3 years ago
Solve for x and find the value of the unknown angle measures.
snow_tiger [21]

Answer:

x = 20

m = 92

n = 68

p = 92

Step-by-step explanation:

x = 20

2 + 3x = 62

-2           -2

----------------

   3x = 60

  -----   -----

    3       2

    x = 20

m = 92

20 + 68 = 88

180 - 88 = 92

n = 68

The vertical angle is 68 degrees

p = 92

Vertical angle is m, which is 92.

Hope this helped.

5 0
3 years ago
Zoe is collecting books to donate. She started with 3 books and collects two more each week. She is using the equation b = 2w +
malfutka [58]

Answer:

Independent variable: b - books

Dependent variable: w - weeks

graph attached

Step-by-step explanation:

b = 2w + 3

b = total number of books collected

w = is the number of weeks

So, the number of books depend on the number of weeks, so

Independent variable: b - books

Dependent variable: w - weeks

7 0
3 years ago
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