briannacharron briannacharron

22-08-2018
Mathematics

contestada

Kelly is solving x^2 - 4x = 7 by completing the square. What number will Kelly add to both sides of the equation?

x^2 - 4x + _ = 7 + __

Respuesta :

Lazerpent Lazerpent

22-08-2018

To complete the square, you add [tex]\frac{b}{2}^2 [/tex] to both sides

so [tex]\frac{4}{2}^2 [/tex]

[tex]2^2 [/tex]

4

[tex] x^2 - 4x + 4=7 + 4 [/tex]

Answer Link

Otras preguntas

What is the image above an example of describe how it works and how it was used by animators

HELP IS APPRECIATED <3

What's the main idea of the civilized city

Suppose you have a file with 10,000 pages and you have three buffer pages. Answer the following questions for each of these scenarios, assuming that our most ge

what is -2 1/3 - 1 1/2 =

All of the following impact calorie needs EXCEPT? A. age B. location C. daily activities D. height

Which statement correctly identifies one property of each outer planet that distinguishes it from the others? o A. Jupiter has the greatest volume. Saturn has t

Solve by substitution y=-4x+3 y=-2x+3

what is the unit of work ?

What is religion in Egypt concerned with mostly-behavior (things that you do) or beliefs (faith in god or gods).