annanguyen360 annanguyen360

02-08-2020
Mathematics

contestada

Find the zeros of y = x2 - 8x - 3 by completing the square.
O A. x=3+√7
B. X = +3
C. X = 4 + 119
O D. X= -4 + 119

Respuesta :

CSMedrano CSMedrano

02-08-2020

Answer:

Assuming that you meant 4+√19 is C.

Step-by-step explanation:

[tex]x^2-8x-3=x^2-2(4)x-3=x^2-2(4)x+16-3-16\\(x-4)^2-19\\(x-4)^2-19=0\\(x+4)^2=19\\x+4=\sqrt{19} \\x=-4+-\sqrt{19}[/tex]

Answer Link

camrynleaks61 camrynleaks61

17-09-2020

B. X=+3 by completing the square

Answer Link

Otras preguntas

What length is the shortest path from A to G in the graph below?

PLEASE HELP ME WITH THIS QUESTION!!!

50 things that use electricity

Who was the first african american to serve in the united states senate

While Sara was traveling in England; she met an interesting old man. Choose the answer that is the most effective substitute for the underlined part of the sent

What is the genus of plant that is easily identified by having no true leaves, dichotomous branching as well as lobed sporangia (usually yellow in color). a. Ma

How did the travels of European explorers during the Age of Discovery impact maps? A. Maps became more accurate as new lands were found. B. People no longer

Use the function below to find F(2). F(t) = 2•1/2^3t

Click to read "Musée des Beaux Arts," by W. H. Auden. Then answer the question. Both Brueghel and Auden refer to the story of the fall of Icarus in their works.

Tyson is a supervisor for a company in the agroprocessing industry. He commands the respect, confidence, and loyalty of group members by virtue of his honest an