Vrijeme: 23:18

Prelijepi sateliti puni brojeva | Beautiful satellites that like numbers #2

Nastavljajući svoj put Petar otkriva novi satelit

Egzotični izgled ovog satelita privlači ga da ga istraži

Pritajen od ostalih svemirskih objekata

Tajni satelit zapravo je prekriven očaravajućom prirodom

U ovom satelitu mogu se naći tulipani, ruže, orhideje,...

No, ovdje se nalazi i sljedeći Petrov zadatak

Nađi sve nenegativne cjelobrojne parove (a,b) tako da su oba sljedeća izraza cijeli brojevi \frac{a^2+b}{b^2-a} \quad \text{i} \quad \frac{b^2+a}{a^2-b} Kao rješenje nađi zbroj svih vrijednosti a koje dobiješ(ako se neka vrijednost ponavlja u više različitih parova, onda se toliko puta zbraja) i dodaj tome 2 da dobiješ rješenje

New adventures on a different satellite now await Peter

Egzotic beauty draws him to explore

Pretty sights he would never expect to find here

This secret satellite is covered by breathtaking nature

Under the huge trees one finds so many rare plants

Numerous kinds of beautiful flowers like roses and tulips

Even though it is so pretty here, Peter wants to solve this next task and continue

Find all non-negative pairs (a,b) so that both of the following expressions are integers \frac{a^2+b}{b^2-a} \quad \text{i} \quad \frac{b^2+a}{a^2-b} For the solution of this problem find the sum of all the values for a that you find(if a certain value appears in multiple pairs, you add it that value for each its occurence) and then add 2 to it to get the solution.