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
alukav5142 [94]
2 years ago
13

Complete the square. Fill in the number that makes the polynomial a perfect-square quadratic.

Mathematics
2 answers:
kobusy [5.1K]2 years ago
8 0

Answer:

k² − 4k + 4

Step-by-step explanation:

recall the following property of perfect square quadratics

(a-b)² = a²- 2ab + b²  --------------( eq1)

We are given:

k² − 4k + ? --------------(eq 2)

and we are asked to determine ? for which the expression above is a perfect square.

Manipulating the given equation:

k² − 4k + ?  (factor out 2 from the 2nd term), we get:

k² −(2)(k)(2) + ?

now we compare this with the right side of  (eq1)

a²- 2 a b + b²

we can clearly see that a = k and b = 2,

substituting this back into eq 2,

k² − 4k + 2²

= k² − 4k + 4

Mrac [35]2 years ago
4 0

Answer:

4.

Step-by-step explanation:

Hope this helps!

You might be interested in
What is the Area of a triangle with the height of 0.7 cm and a base of 6cm
Mashcka [7]

Answer: Area = 2.1 cm^{2}

Step-by-step explanation:

4 0
2 years ago
Can someone help me with this plz so i could get it over with thanks brainliest for first person and correct answer
insens350 [35]
The rate of change for function A is 2. It would originally be 2 over one but you can just simplify it down to 2. The rate of change for function B is 3. Which would also originally be 3 over 1.
6 0
2 years ago
PLEASE HELP WILL GIVE BRAINLIEST TO CORRECT ANSWER
Naddika [18.5K]

Answer:

C

Step-by-step explanation:

The line of best fit is a linear function that is closest to all the points and shows the trend in the data. Since the data is going up ultimately, the slope of the line will be positive. Only B and C are options.

To find the best fit, draw a line through the center of the most points. This line will have as its y-intercept a value around 12 and a gentle slope. This means the answer choice is C.

6 0
3 years ago
How to write 1 2/5 as a percent
Tems11 [23]

140%

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
​
hjlf
4x - 3y + 20 = 0....4x - 3y = -21

4x - 3y = -21.....multiply by -2
5x - 6y = -25
----------------
-8x + 6y = 42 (result of multiplying by -2)
5x - 6y = -25
---------------add
-3x = 17
x = -17/3

this system of equations has 1 solution
4 0
3 years ago
Other questions:
  • Which is greater 0.75 or 3 over 16
    14·1 answer
  • Can someone help me with these questions
    15·1 answer
  • Solve for x: −2(x + 3) = −2(x + 1) − 4. (1 point)
    10·1 answer
  • What is 1.03 * 1.005
    13·2 answers
  • What is the first “given” on number 7?
    15·2 answers
  • Convert the angle \theta=260^\circθ=260
    15·1 answer
  • What is 2/3 of 1/4 ?
    9·1 answer
  • A number increase by three is two more twice the number.find the number.​
    9·1 answer
  • The area of the triangle below is 5.52 square feet. <br> What is the length of the base?
    12·1 answer
  • For a ride on a rental scooter, Charlie paid a $3 fee to start the scooter plus 11 cents per minute of the ride. The total bill
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!