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
Neko [114]
2 years ago
11

What value should be added to both sides for completing the square in this equation?

Mathematics
1 answer:
Mila [183]2 years ago
3 0

Hey there!

x^2 + 4x = 12

SUBTRACT 12 to BOTH SIDES

x^2 + 4x - 12 = 12 - 12

SIMPLIFY IT

x^2 + 4x - 12 = 0

FACTOR the LEFT SIDE of your EQUATION

(x - 2)(x + 6) = 0

• EQUATION #1: x - 2 = 0

OR

• EQUATION #2: x + 6 = 0

SIMPLIFY IT

• EQUATION #1 answer: x = 2

OR

• EQUATION #2 answer: x = -6

OVERALL ANSWER: x = 2 or x = -6

YOUR ANSWER: x = 2 (Option A.)

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

You might be interested in
Using the graph below, find the missing value to complete the t-chart.
S_A_V [24]
I think the answer is (B)
5 0
2 years ago
Read 2 more answers
Which polynomial matches the expression -x(x – 5)?x2 – 5x x2 + 5x -x2 + 5x -2x – 5
Leno4ka [110]

Answer:

-x2 + 5x

Step-by-step explanation:

See below.

The graphs are the same

8 0
3 years ago
Simplify c x d x 4 =
White raven [17]

Answer:

Ya the person above me is right 4cd

3 0
2 years ago
The length of a rectangle is 3131 inches greatergreater than twice the width. if the diagonal is 2 inches more than the​ length,
Gala2k [10]

We have a rectangle with a diagonal included. That means we have to use Pythagorean's Theorem to find the missing dimensions. We start with the width as w. The length is 31 more than twice the width, so the length is 2w+31. The hypotenuse (diagonal) is 2 more than the length, so the diagonal measures 2w+33. In a right triangle, the hypotenuse is always the longest side, so we set up Pythagorean's Theorem using the bolded values as such: (2w+33)^2=w^2+(2w+31)^2. Distributing by multiplying we simplify to 4w^2+132w+1089=w^2+4w^2+124w+961. We need to solve for w. Once we do that we can use that value to find the length. What's nice is that the 4w^2 terms cancel each other out. So when we combine like terms and get them all on one side of the equals sign to factor we have w^2-8w-128=0. The 2 numbers that add up to -8 and multiply to -128 are 16 and -8. So the width is either 16 inches or the width is -8 inches. The 2 things in math that will never EVER be negative are time and distance/length. So -8 is out. The width is 16 inches. That means that the length is 2(16)+31, which is 63 inches. There you go!

8 0
3 years ago
(answer with "sometimes, always, or never true")<br> An integer is a whole number.
Pani-rosa [81]

Answer:

An integer is always a whole number

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • A new park was designed to contain two circular gardens. Garden A has a diameter of 50 m, and garden B has a diameter of 70 m. T
    8·2 answers
  • PLEASE HELP!!!! Explain why a quadratic equation with a positive discriminant has two real solutions, a quadratic equation with
    5·1 answer
  • The measure of the supplement of an angle exceeds 3 times the measure of the complement of the angle by 10. Find the measure of
    9·1 answer
  • Help with 13 and 14 please
    7·1 answer
  • Order the numbers from least to greatest.<br><br> |-3|, 4, |-7|, -4, 0
    5·2 answers
  • Find all solutions of the equation in the interval [0, 2pi)<br> cosx (2 sinx+1)=0
    5·1 answer
  • Please help me with this question​
    9·2 answers
  • Please help! Due tonight thank you!
    15·2 answers
  • Solve for x : <br><br><img src="https://tex.z-dn.net/?f=%5Cqquad%20%5Crightarrow%5Cbf%204x%20%2B%209x%20%2B%202x%20%3D%2030" id=
    6·2 answers
  • Please help me with this question &lt;3 ASAP!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!