SOLUTION: X squared minus x is divisible by 2

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: X squared minus x is divisible by 2      Log On


   

Question 1023176: X squared minus x is divisible by 2
Answer by ikleyn(52873) About Me  (Show Source):
You can put this solution on YOUR website!
.
highlight%28If_x_is_an_integer_then%29 x squared minus x is divisible by 2.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

x%5E2-x = x*(x-1).

This number is even, because it is the product of two consecutive integer, one of which is multiple of 2.

Why should I write the correct condition instead f you?