1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dem82 [27]
3 years ago
9

What is (5+2i)*(5+2i)?

Mathematics
2 answers:
Strike441 [17]3 years ago
8 0
25+10i+10i+4i^2
25-4
21+20i
20i+21
OLga [1]3 years ago
7 0
<span> (5+2i) * (5+2i) 

Distribute...

25 + 10 i + 10 i  + 4i^2 

Remember ... when there is a number with i^2 it will equal to (-1)...

So that means in this question .. I replace  4i^2 with - 4 because 4 ( -1) = -4 

Now I can combine like terms....

25 + 10i + 10i - 4 

Soo... The answer is 21 + 20i</span>
You might be interested in
A sum of money doubles itself in 16 2 years at certain rate of simple interest. How long will it take to double itself at the sa
Viefleur [7K]

Answer:

r=40% or .4

Step-by-step explanation:

32=16(1+r)^2

6 0
3 years ago
Determine the height of the can of beans(cylinder) given the volume of the
jeka94

Answer:

4 in(a)

Step-by-step explanation:

height-?

volume-314

radius-5

pie-22÷7 or 3.14

volume= πrsquared h

314=3.14×5×5×h

314= 78.5h

314÷78.5

= 4 in

8 0
3 years ago
HURRY PLEASEEEEEEEEEEEEEEEEEEEEEEEE
dexar [7]

Answer:i would say 1

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
11. What is the value of function: f(x) = 10x +2 when x = 5?<br> A)5<br> B) 50<br> C)52<br> D)60
kolezko [41]

Answer:

10[5]+2=52

The answer is c

8 0
3 years ago
Read 2 more answers
HELP ITS URGENT please
stich3 [128]
The correct answer is D.

A function cannot have an x-value that corresponds to more than one y-value.
In this table, the x-value '8' corresponds to two separate y-values; 8 and 5, making it invalid as a function.
7 0
3 years ago
Other questions:
  • To assign a double variable d to a float variable x, you write ________. x = (long)d x = (int)d; x = d; x = (float)d;
    13·1 answer
  • Provide at least 1 equivalent fraction for the following:?i need help please this is due tomorrow
    10·1 answer
  • Combine the like terms to create an equivalent expression.<br><br> 7k-k+19
    13·2 answers
  • En 16 años, Juan tendrá 3 veces la edad que José tiene ahora. Indica qué planteamientos son correctos.
    13·1 answer
  • The ratio of 12 teachers to 25 staff
    13·1 answer
  • PLEASE HELP ME <br> WITH STEPS
    11·1 answer
  • what is the percent decrease on a Tv that has been marked down from $550 to $420? round to the nearest tenth​
    10·1 answer
  • Triangles and rectangles given in cm and need to find the surface area​
    9·1 answer
  • What is the surface area of the triangular prism? *
    11·1 answer
  • Simplify the expression. 10 (n^2+ n) - 6 (n^2 - 2)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!