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
Ugo [173]
3 years ago
5

Which of the following statements is true about completing a square? A. When completing the square, subtract the square of half

the coefficient of x from both sides of the equation. B. When completing the square, add the square of half the coefficient of x to only the x^2+bx side of the equation. C. When completing the square, add half the coefficient of x to both sides of the equation. D. When completing the square, add the square of half the coefficient of x to both sides of the equation.
Mathematics
2 answers:
Darina [25.2K]3 years ago
5 0

Answer:

D

Step-by-step explanation:

So, let's say that we have the following equation:

x^2+bx=0

And we want to complete the square.

What we need to do is to divide the coefficient of x by half. Square that. Then add that number to both sides.

The answer that reflects this is choice D.

For instance if we have:

x^2+4x=0

Divide 4 by 2 and then square it.

4/2 is 2. 2²=4. Add 4 to both sides. Thus:  

(x^2+4x)+4=0+4

And now, we can complete the square:

(x+2)^2=4

Bezzdna [24]3 years ago
5 0

Answer:

D just took the test

Step-by-step explanation:

You might be interested in
Last year the cost of Mr. patten’s car insurance was 86.80 per month. This year it inscreased by 5 percent. What was the cost of
marissa [1.9K]

Answer:4.34

Step-by-step explanation:

3 0
3 years ago
A table showing pairs of r- and yvalues is shown below.
Crazy boy [7]

Answer:

4

Step-by-step explanation:

6 0
3 years ago
I NEED LOTS OF HELP IF U ANSWER THIS CORRECTLY I WILL GIVE YOU BRAINLYIST PLEASE PLEASE PLEASE ANSWER THIS
muminat
Which question???????????
4 0
2 years ago
A number added to 3 is equal to negative 5, find the number​
anzhelika [568]

Answer:

-8

Step-by-step explanation:

An equation at represents this situation is:

-5 = 3 + x

Find x by;

-5 - 3 = -8

So x is -8:

-5 = 3 + -8 (TRUE)

Hope this helps

6 0
3 years ago
Read 2 more answers
A $50 item is discounted 30%. How much is the discount?​
DaniilM [7]

Answer:

$15

Step-by-step explanation:

Discount = $50 x 30% = $15

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELPPPPPPP!!! Im so confused
    5·1 answer
  • Write the eqWrite the equation of the line, in point-slope form. Identify the point (-2, -2) as (x1, y1). Use the box provided o
    9·1 answer
  • Jack used cubes to make the right angle rectangular prism below she then made smaller rectangular prism using 1/4 of the number
    11·1 answer
  • Ms. Burke invested $53,650, part at 10.5% and the rest at 12%. If the income from the 10.5% investment is one third of that from
    7·1 answer
  • 1 point
    15·1 answer
  • I need the answer immediately!!!!!!
    9·1 answer
  • I will give brainliest if correct !!
    6·2 answers
  • Could somebody help me please
    11·1 answer
  • Write the equation of the line
    13·2 answers
  • COMPLETE<br> Find the value of the function for O.<br> sin(45°) = ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!