Sign In
Ask Question
Yusuf Marshall
Mathematics
17 November, 05:02
How to solve x^2+8x+3 using the quadratic formula
+1
Answers (
1
)
Nathan Lopez
17 November, 05:22
0
x = sqrt (13) - 4 or x = - 4 - sqrt (13)
Step-by-step explanation:
Solve for x:
x^2 + 8 x + 3 = 0
Hint: | Solve the quadratic equation by completing the square.
Subtract 3 from both sides:
x^2 + 8 x = - 3
Hint: | Take one half of the coefficient of x and square it, then add it to both sides.
Add 16 to both sides:
x^2 + 8 x + 16 = 13
Hint: | Factor the left hand side.
Write the left hand side as a square:
(x + 4) ^2 = 13
Hint: | Eliminate the exponent on the left hand side.
Take the square root of both sides:
x + 4 = sqrt (13) or x + 4 = - sqrt (13)
Hint: | Look at the first equation: Solve for x.
Subtract 4 from both sides:
x = sqrt (13) - 4 or x + 4 = - sqrt (13)
Hint: | Look at the second equation: Solve for x.
Subtract 4 from both sides:
Answer: x = sqrt (13) - 4 or x = - 4 - sqrt (13)
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“How to solve x^2+8x+3 using the quadratic formula ...”
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
John paid $100 for renting a canoe for 5 hours. Which graph shows the relationship between the cost of renting a canoe for different hours?
Answers (1)
the approximate Half-Life of titanium-44 is 63 years. how long will it take a sample to loose 75% of its titanium-44? explain Why.
Answers (1)
X² = 144 Work: Solution: Rational or Irrational
Answers (1)
Mikes favorite peaches are $2.50 per pound at the local farmers market. She bought 13.5 pounds. how much did she spend?
Answers (1)
last tuesday, Regal Cinemas sold a total of 8000 movie tickets. proceeds totaled $57,000. tickets can be bought in one of 3 ways: a matinee admission costs $5, student admission is $6 all day, and regular admissions are $8.
Answers (1)
New Questions in Mathematics
The ordered pairs (0,0) (1,4) (2,16) (3,36) (4,64) represent a function. What is a rule that represents this function?
Answers (1)
What number is 6 more than 31?
Answers (1)
Carol has 800 ft of fencing to fence in a rectangular horse corral which is bordered by a barn on one side. find the dimensions that maximizes the area of the corral.
Answers (1)
A chord can contain at most how many diameters
Answers (1)
What is reference angle for 150 degrees
Answers (1)
Home
»
Mathematics
» How to solve x^2+8x+3 using the quadratic formula
Sign In
Sign Up
Forgot Password?