dawnmccall272 dawnmccall272
  • 01-05-2014
  • Mathematics
contestada

The square of a certain negative number is equal to 5 more than one half of the number what is the number

Respuesta :

Poknoy Poknoy
  • 01-05-2014
the square of a certain negative number is equal to 5 more than one half of that number
what is that number
let x be that number
thus        x²  =  x/2 + 5
               x² - x/2 - 5 =  0
               2x² - x -10 = 0
               (2x-5) (x + 2) =  0
                 x =  5/2    or    - 2
                 so the number is    - 2
Answer Link

Otras preguntas

You are told to take an axillary temperature on a small child. you will place the thermometer ________.
Sure as there's an L at the end of a dragon's tail these three words are at the beginning of every scale
The illuminance on a surface is 6 lux and the surface is 4 meters from the light source. What is the intensity of the source? A. 24 candelas B. 144 cande
Find the value of x RT=4x+10 SW= 5x-20
how many times does 4 go into 180
A reason the Battle of Gettysburg was a key turning point was A. it won the war for the Union. B it convinced Europe to become a Union ally C. it greatly weak
Which statement explains the effect if an inhibitor on an enzyme
What is the largest of three consecutive positive integers if the sum of the smaller two integers is 11
Simple exocrine glands are found in the ___ glands in dogs. A. Sweat B. Adrenal C. Salivary D. Mammary
of all the reasons to build offshore wind farms, which scientific reasons make the most sense?