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
Art [367]
3 years ago
11

What number must be added to both sides of the equation to complete the square ?

Mathematics
1 answer:
77julia77 [94]3 years ago
7 0
First consider (x+c)^2 where c is just a random constant. if we expand this by foil (which is distributive property twice), we get x^2 + 2cx+ c^2. we want to find c^2 and to do that, we can first find c. we can find c by looking at the 2cx term. this term should match with 12x, so therefore 2c = 12 so c = 6. this also implies that c^2 = 36.
note that for this problem i was working backwards which is a very powerful problem solving tool: start with what you want to attain, and then see how you can go from where you are now to get to your destination.

let me know if you have any questions!!!

You might be interested in
I need help with a homework question​
Shkiper50 [21]

Answer:

Not my solution.... the gauthmath app did

6 0
2 years ago
PLEASE help me with the answers!!!
jasenka [17]
100=1,478,300
1000=1,478,000
10,000=1,470,000
5 0
3 years ago
Read 2 more answers
Is this right pls...
Dmitry [639]
Yuppp, it is correct!
6 0
2 years ago
Read 2 more answers
How many centimeters are in 8 feet, given that 1 in. 2.54 cm.​
Delicious77 [7]

Answer:

243.84

Step-by-step explanation:

We change feet to inches, and inches to cm.

1 ft = 12 in.

1 in. = 2.54 cm

8 ft * (12 in.)/(1 ft) * (2.54 cm)/(1 in.) = 243.84 cm

8 ft = 243.84 cm

3 0
3 years ago
Read 2 more answers
Val needs to find the area enclosed by the figure. The figure is made by attaching semicircles to each side of a 42-m-42-m squar
oee [108]

The area enclosed by the figure is 4533.48 square meters.

<u>Step-by-step explanation:</u>

Side length of the square = 42m

The semicircle is attached to each side of the square. So the diameter of the semicircle is the length of the square.

Radius of the semicircle = 21m

Area of the square = 42 x 42 = 1764 square meters

Area of 1 semicircle = π(21 x 21) /2

= (3.14) (441) /2

= 1384.74/2

= 692.37 square meters

Area of 4 semicircle = 4 x 692.37

= 2769.48 square meters

Total area = 1764 + 2769.48

= 4533.48 square meters

The area enclosed by the figure is 4533.48 square meters.

7 0
2 years ago
Other questions:
  • N+35=98<br> what is n equal to
    5·2 answers
  • Variability ia a measure of?​
    6·1 answer
  • Find the volume of a right circular cone that has a height of 4.3 m and a base with a circumference of 17.6 m. Round your answer
    5·1 answer
  • Bisectors of angles A, B and C of a triangle ABC intersect its circumcircle at D, E and F respectively. Prove that the angles of
    5·1 answer
  • F(x) = 6x – 12 ; shifts 4 units down.
    7·1 answer
  • −3 1/0−(−2 1/0)
    14·1 answer
  • How can I show that 3sin^2 x-cos^2 x=2 can be written as 4sin^2 x=3?
    10·2 answers
  • A dozen (12) donuts cost $8.40. What is the cost per donut?
    14·2 answers
  • A student mixed 3/5 liter of citric acid solution. He used 1/6 of the citric acid solution for the experiment. How much of the c
    6·1 answer
  • If sec theta&gt;0 and tan theta&lt;0, the terminal side of angle theta must lie in​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!