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
elixir [45]
2 years ago
15

Multiply (2 -10i) (-5 + 3i) Show each step for credit!

Mathematics
1 answer:
jonny [76]2 years ago
5 0

Answer:

The answer is

<h2>20 + 56i</h2>

Step-by-step explanation:

(2 -10i) (-5 + 3i)

Using FOIL multiply each term in the first bracket by the terms in the second <u>bracket</u>

That's

2(-5) + 2(3i) - 10i(-5) - 10i(3i)

<u>Multiply the numbers and simplify</u>

We have

- 10 + 6i + 50i - 30i²

From the rules of imaginary numbers

<h3>i² = - 1</h3>

So we have

- 10 + 56i - 30(- 1)

- 10 + 56i + 30

Simplify

30 - 10 + 56i

We have the final answer as

<h3>20 + 56i</h3>

Hope this helps you

You might be interested in
A triangle has sides with lengths of 8 inches, 15 inches, and 17 inches. Is it a right triangle?
In-s [12.5K]

Answer:

Yes

Step-by-step explanation:

A square plus b square equal c square

3 0
3 years ago
Read 2 more answers
What is a function exponential
valkas [14]
(Credit goes to google)<span>f ( x ) = a </span>x<span>. where x is a variable, and a is a constant called the base of the </span>function<span>. The most commonly encountered </span>exponential-function<span> base is the transcendental number e , which is equal to approximately 2.71828.</span>
3 0
3 years ago
Read 2 more answers
What is the value of x in this equation? 5x + 12 = -18
siniylev [52]

Answer:

x = −6

Step-by-step explanation:

I like to start off by simplifying the equation! Then, I use inverse operations to narrow it down until I reach the answer!

5x + 12= −18

5x + 12 <u>− 12</u>= −18 <u>− 12 </u>

5x = −30

5x<u>/5</u> = -30<u>/5</u>

<u>x = -6</u>

4 0
3 years ago
Read 2 more answers
Simplify the expression. Write your answer as a power.
OlgaM077 [116]
59049/1048576 the / is a fraction
8 0
3 years ago
Multiply the polynomials (a2 + 3a – 7) and (2a2 – a + 4). Simplify the answer.
Alex_Xolod [135]
Answer correct or incorrect

8 0
3 years ago
Other questions:
  • Explain this please? I don't understand it
    5·1 answer
  • Are the ratios 6:5 and 5:6 equivalent
    12·1 answer
  • 4(5t - 7)=10t+2 how to simplify equation
    6·1 answer
  • A dog kennel charges $40 to board a dog for one night and $35 per night each night after that. Henry
    13·1 answer
  • Select ALL the correct answers.
    15·2 answers
  • please help please i dont get it
    6·1 answer
  • What number needs to be subtracted from both sides of the equation 40 = 25 + x in order to isolate the variable and solve for x?
    13·1 answer
  • Help me Guess just help please
    13·2 answers
  • Chris used an employment agency to get a job. The job pays $38K per year. He must pay a fee of 32% of the first four weeks pay.
    13·1 answer
  • True or False: When the length of a confidence interval is 3 for inference concerning a mean, the required sample size is4
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!