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
VikaD [51]
3 years ago
12

X squared -6x=7 for completing the square

Mathematics
1 answer:
Tcecarenko [31]3 years ago
8 0
Take 1/2 of linear coefient (-6), so 1/2 of -6 is -3
square it  (  (-3)^2=9)
add that to both sides
x^2-6x+9=7+9
x^2-6x+9=16
factor perfect square trinomial
(x-3)^2=16
sqrt both sides, remember to take positive and negative roots
x-3=+/-4
add 3
x=3+/-4
x=-1 or 7
You might be interested in
The ordered pair (1,81), (2,100), (3,121), 5,169).. represent a function. What is a rule that represent this function?
zloy xaker [14]

<span>A rule that represents this function is y = (x + 8)².</span>

 

The rule looks like √y = (x + 8)

Now square both sides

<span>y = (x + 8)²</span>

y = x² + 16x + 64

 

<span>I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.</span>

8 0
3 years ago
I don't know what this is. please, help me.
nikitadnepr [17]
The answer is a) 12m^3 + 10n^2
7 0
3 years ago
Write a word problem with dollars and cents that can be solved using subtraction. Include the solution.
Vinvika [58]
Jim have a dollar in 20 cent in his pocket and takes out a dollar how much he have left in his pocket answer- 20 cent
5 0
3 years ago
Read 2 more answers
If 4x^2 - 100 = 0, what are the roots of the equation?
drek231 [11]
The roots to this equation i s either positive or negative five
8 0
3 years ago
Read 2 more answers
I’m not sure how to do this problem
strojnjashka [21]
The first one would be x^12
6 0
3 years ago
Other questions:
  • Solve for x. step by step please show the work<br> x+(-4) =10
    5·1 answer
  • Cam wrote four statements using absolute value. Which of Cam's statements is incorrect?
    6·1 answer
  • Desmond ordered his favourite pizza with 1 2 12 slices. Sadly, he could finish only 7 5 % 75% of the whole pizza. How many pizza
    15·1 answer
  • A yogurt costs 35 pence. How many yogurts can be bought with 3 pounds?
    7·1 answer
  • Complete the square to rewrite the equation in the form (x−h)2=p.
    14·1 answer
  • The check issued on 2/24 was for $104.30. True or false ?
    5·1 answer
  • Gilberto work 3 1/4 hours on Thursday 4 2/5 hours on Friday and 6 1/2 hours and Saturday how many hours did he work in all three
    14·1 answer
  • Are skew lines equidistant? Explain.
    5·2 answers
  • Joe, Sarah, and Bob are all riding their bikes around the neighborhood. Joe can complete a lap around the neighborhood in 15 sec
    9·1 answer
  • You have got to find f(50)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!