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

HELP PLEASE ANSWER ASAP THANK YOU! ILL GIVE YOU 13 points I’ll give you a second reward which is the second picture

4. In order to operate the theremin, a conducting object must be moved within the electric fields produced by the instrument. Would a baton made of wood make a

1.We want …………… a party next month. A. have B. to have C. having D. to having

Find the resultant force

which of the following bacterial names gives information about its cellular morphology? please helpppp:(

considering legal, privacy and ethical factors with the discission as to disclose or not disclose the data breach

Which words or words show that the author is giving a definition A: are called B: the most C:however D:differently

Please help me! Read the screenshots and give a detailed answer pls, I honestly have tried this problem like 4 times and still can't get it right. 100 points an

Circle the letter that represents the K sound in each word

How many different ways can eight-notes be written? HELP‼️‼️