Sign In
Ask Question
Braxton Pratt
Mathematics
1 December, 12:04
What is Y = 2x^2 + 7x + 5
+1
Answers (
1
)
Phoenix Lara
1 December, 12:05
0
x = sqrt (y/2 + 9/16) - 7/4 or x = - sqrt (y/2 + 9/16) - 7/4
Step-by-step explanation:
Solve for x:
y = 2 x^2 + 7 x + 5
y = 2 x^2 + 7 x + 5 is equivalent to 2 x^2 + 7 x + 5 = y:
2 x^2 + 7 x + 5 = y
Divide both sides by 2:
x^2 + (7 x) / 2 + 5/2 = y/2
Subtract 5/2 from both sides:
x^2 + (7 x) / 2 = y/2 - 5/2
Add 49/16 to both sides:
x^2 + (7 x) / 2 + 49/16 = y/2 + 9/16
Write the left hand side as a square:
(x + 7/4) ^2 = y/2 + 9/16
Take the square root of both sides:
x + 7/4 = sqrt (y/2 + 9/16) or x + 7/4 = - sqrt (y/2 + 9/16)
Subtract 7/4 from both sides:
x = sqrt (y/2 + 9/16) - 7/4 or x + 7/4 = - sqrt (y/2 + 9/16)
Subtract 7/4 from both sides:
Answer: x = sqrt (y/2 + 9/16) - 7/4 or x = - sqrt (y/2 + 9/16) - 7/4
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“What is Y = 2x^2 + 7x + 5 ...”
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
Is 4 5/12 a terminating or repeating decimal?
Answers (1)
Sally had 4 groups of 30 and Jake had 3 groups of 40. How many groups does Sally and Jake have all together? Answer the question with a multiplication equation.
Answers (2)
Amy paid $65.78 for a pair of running shoes during a 40 %-off sale. What was the regular price?
Answers (1)
Find the inverse of the given function. 5) y = 3 log 10 x A) y = 3 log x 10 B) y=103x C) y = 102 D) y = 10x/3
Answers (1)
Mark tossed six balls
Answers (2)
New Questions in Mathematics
Find the product of 20*9*5. Tell which property you used Tell property do you use
Answers (1)
Sara likes to collect stamps. She has 68 boxes of stamps with 46 stamps in each box. She decides to share the stamps with her 3 older brothers. After sharing the stamps equally with her brothers, how many stamps does each person have now?
Answers (1)
An 80% confidence interval is found to be (0.52, 0.58) what is the sample proportion?
Answers (1)
Which best explains why all equilateral triangles are similar? a. all equilateral triangles can be mapped onto each other using dilations. b. all equialeratl triangles can be mapped onto each other using rigid transformations c.
Answers (1)
The area of a rectangle is 33 m-, and the length of the rectangle is 5 m less than twice the width. Find the dimensions of the rectangle.
Answers (1)
Home
»
Mathematics
» What is Y = 2x^2 + 7x + 5
Sign In
Sign Up
Forgot Password?