Sign In
Ask Question
Jada
Mathematics
20 March, 08:44
If x^2+1/x=18 then find The value of x minus 1/x
+1
Answers (
1
)
Marley Jarvis
20 March, 08:47
0
Hello.
Multiply all terms by x and cancel:
x2x+1=18x
x3+1=18x (Simplify both sides of the equation)
x3+1-18x=18x-18x (Subtract 18x from both sides)
x3-18x+1=0
(Use cubic formula)
x=-4.27015,0.055565,4.214585
Check answers. (Plug them in to make sure they work.)
x=4.214585 (Works in original equation)
x=-4.27015 (Works in original equation)
x=0.055565 (Works in original equation)
So the answer is: 4
Have a nice day
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“If x^2+1/x=18 then find The value of x minus 1/x ...”
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
A cylindrical well has a radius of 10 feet and a height of 15 feet. what volume of water will it take to fill in the well?
Answers (2)
The product of three consecutive integers (n - 1), n and (n + 1) is - 210. What are the integers?
Answers (1)
Write a quadratic equation, in standard form, that has roots 8 and 11.
Answers (1)
A certain of pink is created by adding 3 cups of red paint to 7 cups of white paint how many cups of red paint should be added to 1 cup of white paint?
Answers (1)
Write 1,000 as a power of 10. A) 103 B) 104 C) 105 D) 106
Answers (1)
New Questions in Mathematics
Round 7.66 to the nearest 10 grams
Answers (1)
How do you work out coefficient of x
Answers (1)
Dennis made a scale drawing of his backyard using the scale 1/4 inch = 3 feet the rectangular swimming pool was 2 inches long and 1 inch wide the drawing what was. the area of actual swimming pool
Answers (1)
Tyler had 2 7/16 yard of fabric. He used 3/4 yard to make a vest. About how much fabric did he have left.
Answers (2)
An iceberg has a volume of 7660 cubic feet. what is the mass of the ice (in kg) composing the iceberg
Answers (1)
Home
»
Mathematics
» If x^2+1/x=18 then find The value of x minus 1/x
Sign In
Sign Up
Forgot Password?