Sign In
Ask Question
Mathematics
Case Chapman
2 January, 02:11
When is 2 x - 3 equal to x squared minus 5
+3
Answers (
1
)
Briley Galloway
2 January, 03:23
0
Solve: 2x - 3 = x^2 - 5 (at least, this is my interpretation of your 2 x - 3).
x^2 - 5 - 2x + 3 + 0, or x^2 - 2x - 2 = 0
I will solve this by "completing the square:"
x^2 - 2x + (1) ^2 - (1) ^2 - 2 = 0, or x^2 - 2x + 1 - 1 - 2 = 0
This is (x-1) ^2 = 3. Taking the sqrt of both sides, we get:
x-1 = plus or minus sqrt (3). Then x=1+sqrt (3) or x=1-sqrt (3). These are the two values of x for which 2x - 3 = x^2 - 5 is true.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“When is 2 x - 3 equal to x squared minus 5 ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
The area is 28 square cm, and 4 width
Answers (1)
How do you write 2.22 in expanded form
Answers (1)
Mouse took 7 seconds to run 350 centimeters
Answers (1)
A local hamburger shop sold a combined total of 38 hamburgers and cheeseburgers on Monday. There were 62 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Monday?
Answers (1)
Luke borrowed $15,000 to pay his college tuition. After he graduates, he will repay the loan along with simple interest. After 2 years, Luke will owe a total of $17,250. What is the simple interest rate on Luke's loan? A 5.75% B 6.52% C 7.25% D 7.5%
Answers (1)
New Questions in Mathematics
25 more than 50 as an expression
Answers (1)
Edith works for x amount of hrs that pays $4 she also has accepted another job that pays $8 an hr working y amount of hrs she can only work 15 hrs a week. Edith wants to earn at least 80 a week. Working both jobs
Answers (1)
Jacob counts 37 ants on the sidewalk and 11 ants on the grass. how many ants does Joes count?
Answers (2)
A number decreased by fifteen is less than two.
Answers (1)
What is the value of x in the equation 1/5x-2/3y=30, when y = 15?
Answers (1)
Home
»
Mathematics
» When is 2 x - 3 equal to x squared minus 5
Sign In
Sign Up
Forgot Password?