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
postnew [5]
3 years ago
15

(1+2i) (2+5i)

Mathematics
1 answer:
Lostsunrise [7]3 years ago
5 0

Answer:

Step-by-step explanation:

first multiply 1 with 2+5i then multiply 2i with 2+5i and you will get

2+5i+4i+10i^2

then in the next step add 4i and 5i you will get 9i

in the next step put i^2=-1 and you will get -10

in the last step just substract 2-10 you will get -8 and 9i

and your answer will be -8+9i

You might be interested in
12 in. to 1 ft. Reduce, Enlarges, or Preserved the size
Leviafan [203]
Preserved the size because 12inchs is = to 1 ft.
8 0
3 years ago
Read 2 more answers
The answer are not in the right order first to answer i will name brainly
Nady [450]

Answer:

it would go pink, purple, green

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
84,267 nearest thousands
AleksAgata [21]
So the answer would be 84,000. hope that helped
4 0
3 years ago
Read 2 more answers
Solve equations: 3|x+4|=6<br><br> | = absolute value
Anestetic [448]

Absolute values are a way of finding a distant from zero, which means there will be 2 answers; one will be positive, and the other will be negative.

|<em>3x - 4</em>| = 5<em>and</em> |3<em>x - 4</em> = a^5 Because you need 2 answers, you have to make 5 positive and negative.

Another way to write this equation would be...

5=|3x-4|=—5

Now lets continue...

5=3x-4=—5

Add 4 to both sides...

9=3x=—1

Now divide by 3...

3=x= -1/3

So the solution is...

X={-1/3  3}

7 0
3 years ago
Read 2 more answers
Write a proportion to find how many points x a student needs to score on a test worth 50 points to get a test score of 78%.
olganol [36]
The answer is:  "39 points" .
_______________________________________________________
Explanation:
_______________________________________________________
" x/ 50 = 78/100 " ;   in which "x" equals the number of points needed.

_______________________________________________________

To solve for "x" ; 
_______________________________________________________

Look at the denominators:  50 * (what value?) = 100.

→ "100 ÷ 50 = 2" .

→ So;  "50 * 2 = 100" ; 

So, let us look at the numerators:

x * 2 = 78 ; 

↔  2x = 72 ; 

Divide each side of the equation by "2" ; to isolate "x" on one side of the equation ; and to solve for "x" ;
_____________________________________________
 →  78 ÷ 2 = 39 ;

The answer is:  "39 points" .
_____________________________________________


4 0
3 years ago
Other questions:
  • What is kitchen in French, dutch and italian?​
    5·1 answer
  • What is this simplifying expression?<br> 3(x+6)+2(x-4)
    14·1 answer
  • Factor the four term polynomial by grouping.<br>10x^3-15x^2+6x-9​
    15·1 answer
  • Recall that Kiley waited for a period of time in the waiting area near the gate before boarding her plane. What percentage of he
    14·1 answer
  • Simplify (3+5p)+(1-5p)
    15·2 answers
  • Which algebraic expression is equivalent to the expression below?
    7·2 answers
  • Jonathan, a college business student wants to study how many pages of notes fellow classmates took during a semester for a finan
    11·1 answer
  • What is the answer to x+2=17-4x
    14·2 answers
  • PLEASE HELP ITS TIMED!!!!! PLEASE EXPLAIN THE ANSWER TOO!
    15·1 answer
  • Help with this plzzzz
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!