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
Pie
3 years ago
13

Solve x2 - 12x + 5 = 0 by completing the square.

Mathematics
1 answer:
vodomira [7]3 years ago
5 0
The answer would be the first one, (x-6)^2=31. To explain this
first, you must expand and simplify the equation and it would look like this,
(x-6)(x-6)=31. Then, solve and simplify the equation and will look like this, "x^2 - 12x + 36 = 31". Since 36 and 31 can be simplified more.
Just transpose 31 to the left and it will become negative and it will look like this,
x^2 + 12x + 36 - 31 = 0
Then the answer would be x<span>^2 + 12x + 5 = 0</span>
You might be interested in
I need help with Which table shows the correct methods used to justify the solution steps?
12345 [234]

Answer:

x = 8

Step-by-step explanation:

3 (x - 5) + 7x = 65

3x - 15 + 7x = 65

10x - 15 = 65

10x = 80

x = 8

5 0
3 years ago
Read 2 more answers
How do you type the infinity sign on a graphing calculator ?
Sati [7]

Using the TI-83 family, TI-84 Plus family and TI-Nspire in TI-84 Plus mode classified as graphing calculators. There is an infinity symbol stipulated in these calculators. <span>An alternate method is inputting +</span><span>1E99 for positive infinity and -1E99 for negative infinity. This is the closest value to infinity.</span>

5 0
3 years ago
A sphere with a diameter of 16mm has the same surface area as the total surface area of a right cylinder with the base diameter
OLEGan [10]
4πrsquare= 2πrsquare+2πrh
2πrsquare=2πrh
R=h
So h=16/2=8mm
5 0
3 years ago
What is the solution to the equation 2(x - 3) = 2x + 5
Genrish500 [490]
Hello there!

2(x - 3) = 2x + 5

Let's start by using the distributive property for the left side.

(2)(x) + (2)(-3) = 2x + 5

2x - 6 = 2x + 5

Then we need to add 6 to both sides

2x - 6 + 6 = 2x + 5 + 6

2x = 2x + 11

We need to transfer 2x on the left side, we gonna do that by subtracting 2x from both sides

2x - 2x = 2x + 11 - 2x

0 = 11

Thus,

There are no solutions.

I hope this helps!

Good luck with your career!
7 0
3 years ago
Read 2 more answers
If y=5x-7, determine the value of y when x=-3
alexdok [17]

Answer:-22

Step-by-step explanation:

5 times -3 equals -15, and the combine it with -7 to get -22

5 0
3 years ago
Read 2 more answers
Other questions:
  • The function p(t) represents the value of a new car t years after it was manufactured.
    13·2 answers
  • Which is NOT TRUE of data sets? A) A measurable characteristic of a sample is called a statistic. B) A measurable characteristic
    8·1 answer
  • What is the approximate length of VU? What is the length of the midsegment parallel to VU?
    12·1 answer
  • What is 16-2t=5t+9
    10·2 answers
  • What equals 19 in multiplication
    10·2 answers
  • Keenan has 35 CDs and 55 DVDs. What is the ratio of DVDs to CDs?
    9·2 answers
  • A shirt costs $30 but is on sale for 25% off. How much does the shirt cost after the sale?
    7·1 answer
  • Seetha drove to work at 30 miles per hour. How fast would she need to drive home for the average speed for her round trip commut
    7·1 answer
  • Can someone please help me with this !
    5·1 answer
  • The length of a rectangle is 20 inches less than twice the width. The perimeter of the rectangle is 86 inches. Find the dimensio
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!