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
matrenka [14]
3 years ago
9

What is the solución of the equation x2-4x+1=0?

Mathematics
1 answer:
koban [17]3 years ago
6 0

Answer:

x = 2 + √3 and

x = 2 - √3

Step-by-step explanation:

Please use " ^ " to denote exponentiation:  x^2 - 4x + 1 = 0.

Here you have multiple choices of methods of solution:

quadratic formula, completing the square, graphing, and so on.

If we complete the square, then:                   x^2 - 4x + 1 = 0 becomes

                                                                       x^2 - 4x + 4 - 4 + 1 = 0, or

(x - 2)^2 = 3

Taking the square root of both sides, we get x - 2 = ±√3, so that the roots are:

x = 2 + √3 and

x = 2 - √3

You might be interested in
The circumference of a circle is 36pi cm what is the radius
alexdok [17]

Answer:

The radius is 18 cm

Step-by-step explanation:

The formula for circumference with radius is

C = 2*pi*r

We know the circumference is 36 pi

36 pi = 2 * pi *r

Divide by pi

36 pi/pi = 2 * pi/pi *r

36 = 2r

Divide by 2

36/2 = 2r/2

18 = r

8 0
3 years ago
Ann believes that y= 3x (x -7) is a quadratic function. Jordan says that she is wrong because the degree (highest exponent) is n
ad-work [718]

Answer:

Ann us correct. It's a quadratic function.

Step-by-step explanation:

Given equation is,

y = 3x(x - 7)

By converting this equation into the standard quadratic equation,

y = 3x² - 21x

Highest exponent of the polynomial equation is 2 (Exponent of highest degree variable x²). This decides that the given function is a quadratic function.

Therefore, Ann is correct. It's a quadratic function.

5 0
3 years ago
Mr. Jones wants to buy 6 tickets to a play. Each ticket costs $10. Mr. Jones has $45 in his pocket.
lawyer [7]

Answer:

He needs $15 more

Step-by-step explanation:

since each ticket costs $10 dollars, and there is 6 tickets, we need to multiply 10 x 6 to get the total cost of all tickets

10 x 6 = $60

To find how much more money he needs to buy all tickets, we need to subtract $45 from the total cost of tickets, which is $60

$60 - $45 = $15

Hope you understand this explanation!

8 0
2 years ago
If a man runs for a nd hour and a half at 8 miles an hour due South; and he continues south on a bus traveling at 55 miles an ho
blsea [12.9K]

he ran 8 * 1.5 = 12 miles

the bus went : 55 * 24/60 = 22 miles

12 +22 = 34 miles total

8 0
2 years ago
What does it take to become a boxer?
Murljashka [212]

Answer:

you have to have a fighting spirit

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the equation for the parabola graphed below.
    9·1 answer
  • 1)
    13·2 answers
  • Trina's car uses 12 gallons of gas to travel 144 miles. If she has 6 gallons of gas in the tank, how much more gas will she need
    6·1 answer
  • PLEASE HELP LAST QUESTION
    9·1 answer
  • Tell whether the equation has one, zero, or infinitely many solutions.9(x − 3) + 15 = 9x − 11.
    12·2 answers
  • Find the 43rd term of the sequence<br><br> -3.0,-2.5,-2.0,-1.5
    9·1 answer
  • Pls someone help me with this math problem and please explain how u got the answer
    5·1 answer
  • PLEASE HELP - QUIZ
    13·1 answer
  • Leticia can run 2 miles in 11 minutes. How long would it take her to run 8
    9·2 answers
  • A) Katie and Jill currently share a dresser, and each would like to have one of her
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!