MountainWolf25
MountainWolf25 MountainWolf25
  • 14-09-2020
  • Mathematics
contestada

Solve x2+4x=1 by Completing the square

Solve x24x1 by Completing the square class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 15-09-2020

Answer:

  x = -2 ±√5

Step-by-step explanation:

You want to complete the square by adding the square of half the coefficient of the linear term:

  x^2 + 4x + (4/2)^2 = 1 + (4/2)^2

  (x +2)^2 = 5 . . . . . simplify

  x +2 = ±√5 . . . . . . take the square root

  x = -2 ±√5 . . . . . . subtract 2. This is the solution.

__

For the problem in the picture, replace x with p in the above.

Answer Link

Otras preguntas

Select the letter of the term that identifies the function of the phrase in parentheses in the following sentence: Today many Americans enjoy (eating F
examples of French forts are?
If two angles are supplementary and one angle measures 47°, what is the measure of the other angle? 43° 133° 53° 47°
Identify and explain the meaning of the pun. Save and attach to the grade book as usual. 1. Mercutio has been stabbed by Tybalt. He says: "No, ‘tis not so deep
(10 POINTS) He stands, looking after her, his books still under his arm, while a feeling of total displacement sweeps over him. Mechanically he opens the door;
Which sentence has the angriest tone? A) Don was mad at his brother for breaking his toys. B) When Don's brother broke his toys, he made Don angry. Don's brothe
Work out 4 x (1+5-8)
Lisa walks at a speed of 3.25 miles per hour for 1.5 hours. How many miles does she walk in all?
26x=74 which describe how to solve the equation below
What is the mass of two moles of HNO3?