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

Which of the following replaces guanine in RNA? (A) adenine (B) thymine (C) cytosine (D) uracil (E) none of the above

A regulation tennis court measures 78 feet long by 36 feet wide.Brad is making a scale drawing of the tennis court using a scale of 1 foot = 1/2 inch.How long i

Why does the evaporation of sweat cool your body on a warm day

what is the answer for r+11+8r=29?

A minute hand of a large clock is 6 ft long. How far does the point move in an hour?

the number of electrons in the outer ring of the elements phosphorus, potassium, oxygen, iodine, gold, bromine, sulfur, and cobalt?

why were roads significant to the roman republic and ancient cultures and religions of the same time period

What are two methods that scientists use to predict volcanic eruptions

If n is even, which of the following cannot be odd? a) n + 3 b) 3n c) n² - 1, Can you please explain with some details?

What effect did nationalist unrest have on the ottoman empire?