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
nirvana33 [79]
3 years ago
11

How do you solve 1. X^2-x+1=0 2. X^2-2x+5=0 In the complex number system ?

Mathematics
1 answer:
Alexxandr [17]3 years ago
8 0
You use the discriminant (b²-sqr(4ac))/2a and if sqr(4ac) inferior to 0 then use i = sqr(-1)
You might be interested in
Brice had 3 energy bars.he ate half of one.how many energy bars remained uneaten
Paladinen [302]
Two and a half energy bars it should be the right one.
3 0
3 years ago
The population of the United States was about 280 million in 2000 and about 310 million in 2010. What was the annual rate of cha
JulsSmile [24]

To find the annual rate of chnge, we have to use the following formula

\frac{P(2010)-P(2000)}{2010-2000}

P(2010) represents the population in the year 2010 and P(2000) represents the population in the year 2000 .

Substituting the values, we will get

\frac{310-280}{2010-2000} = \frac{30}{10} = 3 \ million \ per \ year

8 0
3 years ago
one month ruby worked 6 hours more than Isaac and Svetlana worked 4 times as many hours as ruby together they worked 126.find th
12345 [234]
Use x as the base variable. All others as x+(extra amount).

8 0
3 years ago
Read 2 more answers
Which expression is equivalent to -2(-7h -
disa [49]

Answer:

a. 20h + 8

Step-by-step explanation:

-2(-7h-4) + 6h = 14h + 8 + 6h = 20h + 8

3 0
3 years ago
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 7 liters of natural oil for every 5 liters of
Svetach [21]
What we know:
Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 7 liters of natural oil for every 5 liters of synthetic oil.

What we need to find:
If 355 liters of synthetic oil are used, how many liters of petrolyn oil will be made?

Set up a proportion to find how much natural oil is used.
7L natural oil/5L synthetic oil = x/355 synthetic oil where x=natural oil
7/5=x/355
(5)(x)=(7)(355) cross multiplied
5x=2485 simplified
5/5x=2485/5 multiplicative inverse
x=497L

Now, add both synthetic oil and natural oil to find amount of petrolyn oil.

355 L synthetic oil + 497 L natural oil= 852 L of petrolyn oil
5 0
3 years ago
Other questions:
  • Jessica is paid $8.50 an hour and also earns a 15% commission on any sales she makes. In one week, if she worked 30 hours and ha
    12·1 answer
  • James saved £15 per week for 100 weeks. How much did he have? How much would he have after 2 years
    5·1 answer
  • What is the difference between the rational expressions below? 3x+1/x^2-5/x
    10·1 answer
  • Suppose you plan to go out for a picnic during spring break. You plan to bring sandwiches, fruits, and drinks. But you only have
    7·1 answer
  • What is the equation of the function shown in the table?
    9·1 answer
  • The graph below represents the following system of inequalities.
    8·1 answer
  • I need a bit of help...
    14·2 answers
  • Plssss hurryyy
    14·1 answer
  • Plz Solve Will Mark Brainliest and No Stealing Points Or Will Report<br> Part 1
    8·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Chuge%5Cfbox%5Cpink%7BQuestion%7D" id="TexFormula1" title="\huge\fbox\pink{Question}" alt="\
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!