henrybat5000 henrybat5000

22-10-2018
Mathematics

contestada

What equation results from completing the square and then factoring? x^2 +4x=5

A. (x+2)^2 =9

B. (x+2)^2 =3

C. (x+2)^2 =7

D. (x+2)^2 =1

Respuesta :

sqdancefan sqdancefan

22-10-2018

Answer:

A. (x+2)^2 = 9

Step-by-step explanation:

To complete the square, you add the square of half the x-coefficient.

... x^2 +4x +(4/2)^2 = 5 + (4/2)^2

... x^2 +4x +4 = 9

Factoring gives you ...

... (x +2)^2 = 9 . . . . . . matches selection A

Answer Link

Otras preguntas

a warm moist air moves into a region barometric pressure readings in the region will generally

what are some common motives of nations and states?

Students research unicellular, prokaryotic organisms that live in harsh environments such as volcanic hot springs, brine pools, and anaerobic black organic mu

Steve grows taller each year. Is this a transitive verb or a intransitive verb?

what is the relationship between a fundamental note and its overtones ?

name of 4 men who were called"The Empire Builders" of the California Railroad system?

what can you compare a chloroplast to

Which describes a spontaneous reaction? a. Positive ΔH b. Negative ΔH c. Positive ΔG d. Negative ΔG e. Positive ΔS

Fungus-like protists have a. cell walls made of cellulose. b. cell walls made of chitin. c. chloroplasts for photosynthesis. d. none of the above.

Express on simplest form in terms of i: sqrt-16