allaboutcleans allaboutcleans
  • 03-11-2020
  • Mathematics
contestada

When the sum of 7 and twice a positive number is subtracted from the square of the​ number, 0 results. find the number?

Respuesta :

mysticsouls
mysticsouls mysticsouls
  • 03-11-2020

Answer:

x^2 - 2x - 7 = 0

Step-by-step explanation:

??? Maybe I am not sure

Answer Link
gardnerdanj gardnerdanj
  • 03-11-2020

Answer:

x = 3.82 or x=-1.82

Step-by-step explanation:

[tex]x^{2} -(2x+7) = 0\\x^{2} -2x-7=0\\[/tex]

The solution is:

[tex]x=\frac{2+\sqrt{2^{2}+4*7 } }{2}[/tex]

or

[tex]x=\frac{2-\sqrt{2^{2}+4*7 } }{2}[/tex]

So x = 3.82 or x=-1.82

Answer Link

Otras preguntas

Find the product. Simplify your answer. (3s+3)(3s–3)
Help me out pls ...​
Mr. Smith drove for 45 minutes at a speed of 40 km/h. He stopped for 15 minutes for a coffee break and then he drove for 2 hours at a speed of 75 km/h. What was
8 pounds + 12.6 oz + 23 pennies = How many pennies??
DNA analysis can be used to identify a person, because no two people have the same what?
please i need help ​
9. Bicycle tubes burst when they are overfilled. Why?​
Which Georgia senator fought for farmer's rights in Congress? Group of answer choices Henry Grady Tom Watson Richard B. Russell Alexander Stephens
Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called natural selection A.Survival of th
What is a reader doing when they are delineating an argument?(1 point) analyzing the claim and evidence revising the claim and evidence recommending the claim a