ryanpire ryanpire

02-04-2018
Mathematics

contestada

If x is a whole number and 437 = (21 + x)(21 - x), then x = a0

Respuesta :

mathmate mathmate

02-04-2018

factor 437=19*23
Therefore (437)=19*23=(21-2)(21+2) => x=2

Answer Link

Аноним Аноним

02-04-2018

(21 + x) (21 - x) = 437
21² - x² = 437

441 - x² = 437

- x² = 437 - 441

- x² = -4

(-1)(-x²) = (-1)(-4)

x² = 4

So, x = 2

Answer Link

Otras preguntas

provide five benefits from the services you know

_______ housed individuals of Japanese descent living within the United States during World War II. A. Concentration camps B. Ghettos C. Internment camps D.

What was one of the first things President Hoover did to combat the effects of the Great Depression?

The most reliable method of research and lexicography is the

What is not true about contracts?

What is the "tyranny of the majority" and what part of the Constitution protects us from it?

The vertices of a trapezoid are shown below. P(0, 0), Q(2, 0), R(2, 7), S(0, 14) This trapezoid is dilated about the origin by a scale factor of 4. What is th

Can someone please help me with this I'm on a time limit

Which of the following is not included in a standard paper dictionary? a. a link that allows you to hear the word b. the etymology of a word c. a word's pron

In the Greek tragedy Antigone by Sophocles, the playwright uses the death of __________ to evoke pity and fear in the audience.