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
dedylja [7]
2 years ago
8

(2x+3)²=5.find the roots of the equation ​

Mathematics
1 answer:
bija089 [108]2 years ago
4 0

Answer:

-2.61803398875, -0.38196601125

or

(-3±√5)/2

Step-by-step explanation:

First, expand. (2x+3)² = 4x²+12x+9=5

4x²+12x+4 = 0

Quadratic equations take the form ax²+bx+c = 0

In this case,

a = 4

b = 12

c = 4

You can solve with the equation x=(-b±√b²-4ac)/2a

Plug in:

(-12±√144-64)/8

(-12±√80)/8

(-12±√2^4×5)/8

(-12±4√5)/8

(-3±√5)/2

Final answer x = (-3±√5)/2

If you want decimal form: -2.61803398875, -0.38196601125

You might be interested in
The formula gives the height of an object in free fall at time t and acceleration g.
ale4655 [162]

t must equal √2h/g but I don't see that in the choices above

3 0
3 years ago
Make a T-chart with 5 points and Graph the function below on the graph paper you have been provided with. Identify the Key featu
olasank [31]

Answer:

look this up ok

Step-by-step explanation:

Graph axis of symmetry vertex and max and min, domain and range

8 0
3 years ago
The length of the base of a triangle is twice its height. If the area of the triangle is 16 square kilometers, find the height.
ValentinkaMS [17]

Answer:

4

Step-by-step explanation:

Area of a triangle = bh/2

B = 2h

16 = 2h × 2/2

h×2 = 16

2h = 16

* put a square root on both sides then u will get the answer which is

Height of the triangle = 4

3 0
2 years ago
Please give me an answer as fast as possible I need to finish this assignment.
TiliK225 [7]

Answer:

24

Step-by-step explanation:

I hope I'm right :)

5 0
3 years ago
John has three more marbles than Steve. If they have 25 marbles, how many marbles does each have?
Natalija [7]

john has 14 steve has 11

3 0
2 years ago
Read 2 more answers
Other questions:
  • How do I solve this problem?
    5·1 answer
  • This is due in 15 minutes
    13·1 answer
  • At what position on the number line is the red dot located
    11·1 answer
  • Braden's dining room is 6 meters wide and 7 meters long. braden wants to install a new wood floor. it will cost $2.97 per square
    14·1 answer
  • 2x - y = 0<br> 4x - y = 0
    5·2 answers
  • What is the value of x in sin 29° = cosx?<br> 29 degrees<br> 61 degrees<br> 1 degree<br> 151 degrees
    9·1 answer
  • My question is c is not less than zero​
    8·2 answers
  • Check for understanding:
    13·1 answer
  • According to the table below, what is the probability that a student chosen at random will be 16 or older?
    6·2 answers
  • Guided Practice
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!