![kodyclancy](/avatars/27302.jpg)
kodyclancy
14.12.2019 •
Mathematics
Write x2 − 6x + 7 = 0 in the form (x − a)2 = b, where a and b are integers.
a). (x − 4)2 = 3
b). (x − 3)2 = 2
c). (x − 2)2 = 1
d). (x − 1)2 = 4
Solved
Show answers
More tips
- H Health and Medicine What to Do If You Are Bitten by a Dog?...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- F Food and Cooking Discover How to Properly Prepare Dough for Rasstegai...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
Answers on questions: Mathematics
- M Mathematics A major technology startup company is growing incredibly fast. The company started with just 4 employees, but is tripling its amount of staff every year. How many people will...
- M Mathematics 20 pts please get this right...
- G Geography the country of libya is shown on the map above. a person from libya would most likely speak the same language and practice the same religion as someone from which of the following...
- M Mathematics A store manager wishes to investigate whether there is a relationship between the type of promotion offered and the number of customers who spend more than $30 on a purchase....
- M Mathematics As an estimation we are told 5 miles is 8 km. Convert 35 miles to km....
- M Mathematics The ratio of two complementary angles is 7 to 3. what are the angles?...
- M Mathematics Answer my question and tell me how many point did u get???...
Ответ:
Let's complete the square [x²-6x+(??)²] -(??)² +7 = 0
As you noticed we have added the unknown square & also subtract the same so that not to change the equation
The question now is to calculate this square (??)²
We know that the middle term (6x) is twice the square root of the 1st times the square root of the 2nd, That is 6x=2x (multiply) √(??)²
6x = 2x?? & ??=6x/2x===> ?? =3 & (??)² =9
Hence plug (??)² into the equation above:
x² - 6x + 9 - 9 +7 =0
(x²-6x+9) -9 + 7 =0
(x-3)² -2 =0 > (x-3)² = 2 (that is B)
Ответ:
A. The order of objects counted in a permutation always matters.
Step-by-step explanation:
Option A is the right answer.
The order of objects counted in a permutation always matters.
Permutation are used for lists where order always matter. Permutation is used to arrange members of a set into an order. With permutation, every little detail matters. The number of permutations on a set of 'n' elements is given by n!