decodrafting decodrafting

18-12-2020
Mathematics

contestada

Solve x^2+4x=1 for x by completing the square

Respuesta :

jacobEwing jacobEwing

18-12-2020

Answer:

x is approximately equal to 0.34 and -4.34

Step-by-step explanation:

[tex]x^2 + 4x = 1\\x^2 + 4x + 4 = 5\\(x + 2)^2 = 5\\x + 2 = \sqrt{5} \\x = -2 + \sqrt{5}\\x \approx 0.34 \ and -4.34\\\\[/tex]

Answer Link

Otras preguntas

Read the following scenario to determine which hazard prevention or control method applies. Every day, Mary mops the warehouse floor to keep it clean and free f

why are liquids usually difficult to compress?

Why are transitions important in writing?

Technology, science, and inventions enhanced _____ in the twentieth century?

Antarctica's landscape is proof that it has one of the highest levels of precipitation in the world. True False

Which is most likely can effect of the golf stream

Which product formed when MgO and H2O react together?

Which expression has a value of 36, when x= 4 and Y= 7. A: 2xy, B: 2x + 4y, C: 6y - x, D: 12x - 2y. Which one should i choose

When light hits a smooth shiny surface the light A refracts B reflects C speeds up D diffracts

When light energy excites electrons in photosystem II, where do the electrons to replace them come from?