Dove23
Dove23 Dove23
  • 18-04-2018
  • Mathematics
contestada

Prove that n^2 - n is divisible by 2 for every positive integer n.

Respuesta :

konrad509
konrad509 konrad509
  • 04-08-2018

[tex] n^2-n=n(n-1) [/tex]

[tex] n(n-1) [/tex] is a product of two consecutive numbers, one of which, must be even. Therefore the number is divisible by 2.

Answer Link

Otras preguntas

Write a paragraph summarizing the central idea of Sotomayor’s speech. Include key details that Sotomayor uses to support her idea. –“A Latina Judge’s Voice,” So
A group of organisms of one species is called a ______________. PLS HELP QUICK!!!
emporiors knew süleyman as "süleyman the magnificent" True false
I need help with number 2
witch coutier to the royal family of the city-state Manatu worte a guide that decribes how a coutier sohuld act while serving at court
How many units is it from 3 to -4 on a number line?
In hunter gather societies people lived a what lifestyles
What was the original governing document of the early US
Help please help need help
Please Help!! Which of these was not a progressive political reform? A. Lower taxes B.Initiative C.Referendum D.Recall elections