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
KIM [24]
2 years ago
5

Simplify the expression (7 + 9i)(8 - 10i)

Mathematics
1 answer:
NeX [460]2 years ago
6 0

The simplified expression of (7 + 9i)(8 - 10i) is 146 + 2i

<h3>How to simplify the expression?</h3>

The expression is given as:

(7 + 9i)(8 - 10i)

Expand the bracket

7 * 8 + 9i * 8 -7 * 10i - 9i * 10i

Evaluate the products

56 + 72i -70i - 90(i²)

Evaluate the difference

56 + 2i - 90(i²)

In complex numbers;

i² = -1

So, we have:

56 + 2i - 90(-1)

Evaluate

56 + 2i + 90

Add the like terms

146 + 2i

Hence, the simplified expression of (7 + 9i)(8 - 10i) is 146 + 2i

Read more about complex numbers at:

brainly.com/question/10662770

#SPJ1

You might be interested in
What does x and y equal in this equation x+y=6
lyudmila [28]
The correct answer to this problem is
C=3
Y=3
8 0
2 years ago
During a bike challenge,riders have to collect various colored ribbons. Each 1/2 mile they collect a red ribbon, each 1/8 mile t
andrew-mc [135]
At the 3/4 marker, the rider can collect a green ribbon and a blue ribbon.

Because 3/4 is the 3rd stop for a blue ribbon and 3/4 is the 6th stop for a green ribbon.

4 0
2 years ago
1.) what is the domain of the following set? (-2,4), (0,3), (1,6), (-1,2)
SCORPION-xisa [38]

Answer:

A. (-2,-1,0,1) .......

8 0
3 years ago
Read 2 more answers
pe ling needs to yard of fabric for a craft project she has 3 feet already how many inches of fabric does she still need
zheka24 [161]
She still needs 36 inches of fabric 
5 0
2 years ago
The blue dot is at what value on the number line?
viva [34]

Answer:

-5

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • What’s the answer ???<br> (ONLY ANSWER IF YOU KNOW)
    8·2 answers
  • GUYS PLEASE HELP ME ILL MARK BRIANLIEST AND GIVE EXTRA POINTS I NEED IT ASAP
    10·1 answer
  • A 24,000 gallon pool is being filled at a rate of 40 gallons per minute. At this rate how many minutes will it take to fill this
    6·1 answer
  • Find the area of the composite figure.
    10·1 answer
  • A random sample of 30 seventh grade students shows that 12 of them own a dog. How many seventh grade students can you predict ow
    6·2 answers
  • Solve the inequality. Graph the solution. 3(-b - 5) &lt; -3
    13·1 answer
  • Which of the following expressions is not equal to X^3?
    14·1 answer
  • Find the distance between the points (-93,-14) and (-28,-86)
    7·1 answer
  • A rectangle is 6 feet long and 3 feet wide. What is the perimeter of the rectangle?
    10·2 answers
  • A triangle with side lengths of 5 meters, 7 meters and 9 meters.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!