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
Yakvenalex [24]
3 years ago
15

X^2 + 4x = 6 solve by completing the square plz show step by step

Mathematics
2 answers:
Hitman42 [59]3 years ago
8 0

Answer:

x = -2 ±sqrt( 10)

Step-by-step explanation:

x^2 + 4x = 6

Take the coefficient of x

4

Divide by 2

4/2 =2

Square it

2^2 =4

Add this to each side

x^2 + 4x+4 = 6+4

Take the 4/2 term which is the factor inside the (x+   )^2

(x+2)^2 = 10

Take the square root of each side

sqrt((x+2)^2) =±sqrt( 10)

x+2 = ±sqrt( 10)

Subtract 2 from each side

x+2-2 = -2±sqrt( 10)

x = -2 ±sqrt( 10)

MakcuM [25]3 years ago
7 0

Answer:

x= +/- \sqrt(10) - 2

Step-by-step explanation:

use the formula (b/2) in order to create a new term.

Solve for x by using the term to complete the square.

You might be interested in
Make fractions equal by writing a number in each box (equivalent)<br> 1/2 = / = / = / = / = /
Grace [21]
1/2 = 2/4 = 3/6 = 4/8 = 5/10 = 6/12

Let's think of this visually, as a pie. 
If you were to split a pie down the middle into two pieces and ate one slice, you would be eating half of it. 
Now, let's say you didn't eat one of those slices. You sliced the pie down the middle (vertically) and made another slice (horizontally). You would have 4 equal pieces. If you ate two slices that were side by side, you would still have had the same amount if you just sliced it once. If you were to keep slicing and eating, you'd be eating the same amount if you kept it to two pieces. 
Hope it helped! 
5 0
3 years ago
Read 2 more answers
A quadratic function and an exponential function are graphed below. Which graph most likely represents the exponential function?
Musya8 [376]
I think the answer will be A
7 0
3 years ago
Read 2 more answers
Is 4x+2y=8 the same as y=-2+4
Nikitich [7]

Answer:

the correct answer is yes

4 0
3 years ago
Evaluate 3(4-2)^2 :) :)
skad [1K]
Yeah the answer is B. 12
8 0
3 years ago
Complete the table.<br><br> Original Price Percent of Discount Sale Price<br> $<br> 5% $57
mario62 [17]

Answer:

I think it is $54.15 sorry if wrong

6 0
3 years ago
Other questions:
  • Please can you help me this as soon as possible..?
    10·1 answer
  • X-5y=-49 and y=-2x+1
    9·1 answer
  • The double number line below shows the number of basketball cards that represent 60% of Juan's basketball card collection. ​How
    5·1 answer
  • A prism is a three dimentional shape with the same ________ all the way through
    12·1 answer
  • Sophia wrote an equation to represent the revenue of a movie theater for one day. She let x represent the number of child ticket
    8·1 answer
  • How do you estimate weight?
    5·2 answers
  • Nine students took the SAT. Their scores are listed below. Later on, they read a book on test preparation and retook the SAT. Th
    8·1 answer
  • What is Turtle divided by Kitten? YALL I NEED HELP ASAP ON THIS!!!!!!1
    8·1 answer
  • A child's ladder is made of 333 sections. Each section is \dfrac{3}{4} 4 3 ​ start fraction, 3, divided by, 4, end fraction mete
    10·1 answer
  • HELPPP PLEASEEEEE
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!