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

Simplify 8x + 3y - x - 2y

Solve x^2+32=0 Please solve step by step

I need help with 2 and 3

(144[tex]k{2}[/tex][tex]r{2}[/tex])[tex]1/2[/tex]

Please select all of the New Deal programs in the list below that still exist today! (Page 19) Security and Exchange Commission (SEC) Works Progress Administrat

put the parts of an argumentative in the correct order ANSWER: 1. Claims 2. R eason 3. Evidence 4. counter and rebuttal 5. summary statement

What is the BEST way to classify 0? Group of answer choices Counting Number Whole number Irrational Fraction

Lydia uses cup of milk, of a teaspoon of salt, 50 grams of cheese, and 4 eggs to 16 cook an omelet. How much milk, salt, and cheese does Lydia need if she wants

Which one of the following sentences best describes the character of Jamie Sabin? a. He’s young and eager to get home. b. He’s a dreamer looking forward to a gr

If 1250 J of work is done on an object that weighs 50 N, how far can that object be raised?