The familiar Pythagorean 3-4-5 triple gives one solution to (x-1)^n + x^n = (x+1)^n so what about other solutions for x an integer and n= 2, 3, 4 or 5?
Find the smallest integer solution to the equation 1/x^2 + 1/y^2 = 1/z^2
The sum of the cubes of two numbers is 7163. What are these numbers?
My phone number has seven digits: if the last four digits are placed in front of the remaining three you get one more than twice my number! What is the number?