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
Ad libitum [116K]
2 years ago
13

PLS HELP! solve by completing the square x²+4x=8

Mathematics
1 answer:
masya89 [10]2 years ago
4 0

Step-by-step explanation:

x²+4x=8

rearrange

x² + 4x - 8 = 0

half of 4 is 2

so

x² + 4x + 2² - 2² - 8 = 0

do x² + 4x + 2²

multiplies to give 4 adds to give 4

2+ 2

(x + 2)²

(x + 2)² - 2² - 8

(x + 2)² - 4 - 8

(x + 2)² - 12

(x + 2 + √12) (x + 2 - √12)

√12 = √4 * √3 = 2 √3

(x + 2 + 2√3) (x + 2 - 2√3)

You might be interested in
i need all of them, if you answer something that isn't the answer/ just farming points you are getting reported
Elanso [62]
Check this out mate!

6 0
2 years ago
Helppp how do u do 12
Delicious77 [7]
B is the correct answer



\frac{x}{100}  =  \frac{53}{106}  \\ x =  \frac{53 \times 100}{106}  =  \frac{5300}{106}  = 50




good luck
4 0
3 years ago
Read 2 more answers
WHY IS MATH SO COMPLICATED?!
Tomtit [17]
Closed dot on 53, arrow going to the right
6 0
3 years ago
Jordan writes 3(4x – 8) = 12x – 8
Ivahew [28]
Hi! What’s -8 times 3?
8 0
2 years ago
Find the area of a circle is with a diameter of 6
m_a_m_a [10]

Answer:

28.27

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Bill wants to save up to buy a new watch which costs $235. If he already has $75 and he saves $8 each week, how many weeks will
    15·2 answers
  • How do you solve for 0.25(12-8p)=4p-9
    14·1 answer
  • You have to use the zero factor property.
    8·1 answer
  • I need a squared number thats NOT even
    15·2 answers
  • The sum of interior angles in a triangle are 180 degrees. Angle B and C are congruent. Angle B is twenty less than angle A. Writ
    7·1 answer
  • Determine which of the following statements about rigid transformations is false.
    13·1 answer
  • Find the standard form of the equation of the ellipse with the given characteristics.
    5·1 answer
  • A blueprint shows the mater bedroom to be 5 inches long and 3 inches wide. The scale on the blueprint is 2 in : 11 ft. What is t
    11·1 answer
  • Does the data for Camille’s puppy show a function? Why or why not?
    11·1 answer
  • Whats 2+2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!