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
Inessa05 [86]
3 years ago
14

Pls help Equation = x2-2x-3=0

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
5 0

Answer:

x^2 - 2x - 15 = 0.

Step-by-step explanation:

x^2 - 2x - 3 = 0

(x - 3)(x + 1) = 0

So alpha and beta are -1 and 3.

So the roots of the required equation are 2(-1)-1 and 2(3) - 1

= -3, 5.

So the equation is

(x - 5)(x + 3) = 0

-that is x^2 - 2x - 15 = 0

You might be interested in
Find the solution set of the inequality
Natalija [7]

Answer: x>- 7/3


Step-by-step explanation:

Solve for x by simplifying bot sides of the equation, then isolating the variable.

5 0
3 years ago
The sum of 5 consecutive odd numbers is 145 what is the third number in this sequence ​
lawyer [7]

9514 1404 393

Answer:

  29

Step-by-step explanation:

The third in sequence will be the middle one, the average value of all the numbers in the sequence. That average is the sum (145) divided by the number of numbers (5).

  third number = 145/5 = 29

8 0
2 years ago
(8x^3 + x^2 - 5) / (x-6)
alina1380 [7]

Answer:

the answer is 8x^2+49x+294+1759/x-6

5 0
3 years ago
3 of 8<br> The area of a circle is 16.71cm2.<br> Find the length of the radius rounded to 2 DP.
Cerrena [4.2K]

Answer:

Radius = 2.31 cm

Step-by-step explanation:

Area of circle = 16.71 square centimeters

\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=\frac{16.71}{3.14}\\r^2=5.32\\\sqrt{r^2}=\sqrt{5.32}\\r=2.306

Radius of circle = 2.31 centimeter

6 0
3 years ago
Bernardo is converting a fraction A/B, to a percent. Both A and B are whold numbers and not equal to zero. Which expression repr
klasskru [66]
A divided by B produces a decimal fraction.  The percentage is found by mult. this decimal fraction by 100%.  So the correct aswer is C.
4 0
3 years ago
Other questions:
  • A mountain climber ascends a mountain to its peak. The peak is 12,740 ft above sea level. The climber then descends 200 ft to me
    12·1 answer
  • Expand (x-2) (x-1). Must be in polynomial form.
    7·1 answer
  • What is the measurement of
    8·1 answer
  • Which one hurry <br> A.10<br> B.20<br> C.38<br> D.66
    11·1 answer
  • Multiply the polynomials.<br> (4x- + 4x + 6)(7x + 5)
    15·1 answer
  • Pls help me, the assignment is on the g00gle docs. I cant put it on here. Pls I need ligit help (remember in g00gle put o s inst
    8·1 answer
  • Find the slope of the line that contains the following ordered pairs. Show all work.
    5·1 answer
  • I have a brain and I know most of you are using brainly to cheat in school
    15·1 answer
  • What is the solution for x in the equation?<br><br><br> 9 - 10x2x+1-8x<br><br> x = ?
    8·1 answer
  • What is the answer to this question with work I need it ASAS
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!