Salirrosasnicol Salirrosasnicol

02-05-2019
Mathematics

contestada

The square of a number decreased by 4 times the number equals 21. Find the number.

Respuesta :

sprinkles1222 sprinkles1222

02-05-2019

Answer: 7

Explanation:

x^2-4x=21

x^2-4x-21=0

(x+3)(x-7)=0

x=-3

x=7

*** if you need to find the positive # only, the ANSWER is 7****

Answer Link

Otras preguntas

Karangan kepentingan memilih rakan sebaya yang baik

At orange grove oranges are packed in small boxes that can hold 50 oranges on Monday the amount of oranges picked filled 80 boxes Howe many oranges were pi

Consider the work of Thomson, Rutherford, and Bohr. In your opinion, which was the most important and why? Be sure to state what your selected person discovered

What international organization was founded by the Treaty of Versailles? North Atlantic Treaty Organization the United Nations Organization of Free Nations the

Which are rights mentioned early in the Declaration of Independence?

Why did France want provisions in the Versailles peace treaty for making Germany as weak as possible? A.) To lay the groundwork for building a strong alliance w

Name one geographic characteristic and explain how it made early life in Greece unique?

What did the Supreme Court determine in Plessy v. Feguson?

Who claims the territory of Kashmir? A. India B. Burma C. India and Pakistan D. Great Britain and Iran Of the following, which imports the most oil in barrels

The product 3.09 x 304.87 =?