Posted by Candice on Tuesday, June 9, 2009 at 6:39am.
Let X and Y be positive integers such that X^2 + 3X + Y^2 = 404.
What is the value of X + Y^3?
Find all possible solutions.
Thanks! :)

maths  Reiny, Tuesday, June 9, 2009 at 9:29am
I ran a simple GWBasic program
10 FOR X = 1 TO 25
20 FOR Y = 1 TO 25
30 IF (X*X + 3*X + Y*Y) = 404 THEN PRINT X,Y
40 NEXT Y
50 NEXT X
and it gave me values of x and y that worked, they were ...
1 20
13 14
16 10
17 8
so x + y^3 could be 8001, 2757, or 81