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

What is the largest known number called?
HELP ASAP ELA POEM!!!!! I will give brainlist the the first person!!! Write your own poem imitating Mary Oliver poem called "the wild geese" by following this f
how much is 409,000x509,000
uld Carbon Dioxide be at its lowest level? A) July B) April C) January D) Ma What created the weather anomaly in the winter of 1980?
What is the slope of the line passing through the points (2,-5) and (4, 1)? A 5/4B 3 C 2 D -4/5​
To apply for a job at the new store in the mole. is this a fragmentation sentence ​
Location B is which place? Canaan Egypt Syrian Desert Mediterranean Sea
Rahi is pouring concrete to create the foundation of a square deck covering 112 square feet. Which is the best estimate of one side of the deck? Round to the ne
My boss is pregnant is it ok to knit him and his husband a baby sweater?
SECOND TIME ASKING HELP!!! 6. Jackie has n nickels and q quarters in her pocket. The total value of the coins is at least $24.75. Write an inequality that repre