Sign In
Ask Question
Giuliana Moody
Mathematics
8 April, 06:35
Complete the Square: x^2+6x=7
+5
Answers (
2
)
Sunshine
8 April, 06:46
0
X^2+6x=7 Half the middle term which 6. And square the result 6/2 = 3 3^2 = 9 This 9 will be added in the left side after the 6x. And also to be added at the right side. Because there is a rule that what you did in left side is you need to to in the right side to be equal. X^2+6x + 9 = 7 + 9 Convert the left side equation into squared and the other side add the two numbers (X+3) ^2 = 16 Squared both sides to remove tye 2 X+3 = + and - 4 You need to right two signs
Comment
Complaint
Link
Sherlyn Campos
8 April, 07:00
0
So if in ax^2+bx+c form then
for the completing the square
(b/2) ^2=c so
if b=6 then
b/2=6/2=3
(b/2) ^2 = (6/2) ^2 = (3) ^2=9
so c=9
x^2+6x=7
add 9 to both sides
x^2+6x+9=16
so factor and get
(x+3) ^2=16
for fun solve
16=4^2
(x+3) ^2=4^2 or - 4
square root both sides
x+3=4 or - 4
solve 2 equaitons
1. x+3=4
sutract 3 from both sides
x=-1
2. x+3=-4
subtract 3 from both sides
x=-7
x=-1 or - 7
solution set=S=x=-1,-7
answer is x^2+6x+9=16
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“Complete the Square: x^2+6x=7 ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is the steps to the answer 17=p-3-3p?
Answers (1)
1 plus 1 Plus 4 plus 4444 plus 1928 plus 63626
Answers (2)
What are some advantages and disadvantages of having a ladder at a very shallow angle?
Answers (2)
7is a supplement of 8 and 7 = 109 find 8?
Answers (1)
8 15 27 blank 20 find the blank number
Answers (1)
New Questions in Mathematics
The box plots represent the ages of pennies in two 50-cent rolls. By looking at the plots, Beth says that the two means are about 5 years apart.
Answers (1)
Which is bigger nine halves or nine quarters? How do you know?
Answers (2)
In triangle abc, ab=90 in, bc=80 in, and angle b measures 50°. what is the approximate perimeter of the triangle? a) 242.4 in. b) 265.3 in. c) 308.3 in. d) 324.1 in.
Answers (1)
The sum of two numbers is 180. one number is 5 times the number
Answers (2)
What is the vertex of the parobala y = (x-5) (x-1)
Answers (1)
Home
»
Mathematics
» Complete the Square: x^2+6x=7
Sign In
Sign Up
Forgot Password?