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
Elden [556K]
3 years ago
9

Please explain this type of problem (1+2i)(1+3i)

Mathematics
1 answer:
zhuklara [117]3 years ago
7 0

Answer:

-5(1-I) is the answer

Step-by-step explanation:

(1+2i)(1+3i)

1(1+3i)+2i(1+3i)

1+3i+2i+6i^2

As i^2=-1

1+5i+6(-1)

1-6+5i

-5+5i

Taking -5 as common

-5(1-i)

I hope this will help you :)

You might be interested in
What are the coordinates of the point (−1, 6) after a reflection across the x-axis?
Agata [3.3K]
The answer would be (-1,-6). Remember that the x-axis runs left to right and the y-axis runs up and down. Therefore, if you were to reflect it, just picture it being flipped over. If you go from (-1,+6) and you reflect it over the x-axis, both points are now in the bottom left quadrant where everything is negative. So, you get (-1,-6) The -1 doesn't change since it was already a -x value before and stayed in a negative area.
3 0
3 years ago
MULTIPLE CHOICE GEOMOTRY QUESTIOON
rosijanka [135]

Answer: D

Step-by-step explanation: Im vv sure, is this a test?

7 0
3 years ago
OMG HELP PLS IM PANICKING OMG OMG I GOT A F IN MATH AND I ONLY HAVE 1 DAY TO CHANGE MY GRADE BECAUSE TOMORROW IS THE FINAL REPOR
notsponge [240]

Answer:

5.Let Alisha= A

Riley= R

Jordan= J

A=7

R=A+4= 7+4= 11

J=3*7= 21

Riley=11

Jordan=21

6.Red Marbles= 18

Yellow Marbles=18*3=54

Green Marbles=18-10= 8

7.This year= 28 eagles

Last year=28/4 =7 eagles

Difference= 28-7 = 21 Eagles

8.Joel= 8 pictures

Taylor= 8*3= 24 pictures

1 Row= 4 pictures

24 pictures= 24/4= 4 rows

4 0
3 years ago
A total of 759 tickets were sold for school play. They were either adult tickets or student tickets. There were 59 more student
weeeeeb [17]

Answer:

350

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The total weight of 9 bags of potatoes is 36 kilograms. Each bag weighs the same amount. What is the weight, in grams, of each b
Sunny_sXe [5.5K]

Answer:

4000 grams

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Pete lives 8 miles from school, which is 80% of the distance Scott lives from school.
    6·1 answer
  • What is the definition of additive inverse? A, B, C or D?
    15·2 answers
  • Oliver treated his sister to lunch while visiting her in Cedarburg. Their lunch cost $275, and the sales tax in Cedarburg is 12%
    5·1 answer
  • The shape on the left is transformed to the shape on the right. Figure A B C D is rotated to form figure A prime B prime C prime
    15·2 answers
  • I don't quite get 4.
    14·2 answers
  • What is the difference of these fractions? use the number line and equivalent fractions to help find the answer -1 1/4+1/2
    10·2 answers
  • Please explain you answer, theres 29 points on the line ya'll
    9·2 answers
  • Which expression is equivalent to 18+ r x r x r ?
    14·1 answer
  • Solve -33 < 12x + 15 99.
    11·1 answer
  • What is the conjugate? See image below! Please help asap
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!