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

Which class of organisms gather their energy directly from the sun? a. autotrophs b. carnivores c. herbivores d. detritivores

Select all that apply. Biogeochemical cycles depend mostly on _____ and _____ for decomposition and the recycling of elements. bacteria fungi protozoa algae pl

76 less than the quotient of an unknown number and five is 116

What main impact did Andrew Jackson have on the geography of the Southern states?

Is infanticide a normal phenomenon in nature? In humans?

All plots must have _____. themes conflict action dialogue

Which of the following was a belief of Voltaire? 1.) Kings should be guided by reason. 2.) Government should be split into 3 Branches. 3.) An absolute monarchy

Another name for a dependent clause is subordinate clause. true or false

This month we celebrate the official folk hero of Massachusetts.He was born in leominster in 1774,and became famous for planting apple orchads and herbs through

which is bigger a pint ,quart or a ounce