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

Hey, need some help reverent A. respectful B. respect C. reply D. to spoil

lara has a tin of peanuts cashews and pecans she will pick a second nut without looking. how many outcomes are there for her two picks?

List all integers between -0.6 and 4.17 THANK U

Compute the odds in favor of rolling a sum of 10 in a single roll of two fair dice

You shoot an arrow set a target. The parabolic path of the arrow passes through the points shown in table. X. Y 30. 6 60. 7 100. 4 A. Find a quadratic function

let g(x)=x-3 and h(x)=x^2+6 find (h o g) (1)

Hey, need some help reverent A. respectful B. respect C. reply D. to spoil

List all integers between -0.6 and 4.17 THANK U

take 2 identical bowls filled with water.shine a spotlight on one and place one away from the spotlight in the same room. which shows higher evaporation and why

let g(x)=x-3 and h(x)=x^2+6 find (h o g) (1)