document.write( "Question 1033733: Prove that there are natural numbers x, y such that
\n" ); document.write( "x^3 + 4 = 17y^2 and xy = 8. How many examples are there?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #648404 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
If x and y are supposed to be natural numbers such that xy = 8, then the only ordered pairs (x,y) possible are (1,8), (2,4), (4,2), and (8,1).\r
\n" ); document.write( "\n" ); document.write( "By direct substitution, (1,8), (2,4), and (8,1) will not satisfy \"x%5E3+%2B+4+=+17y%5E2\". (Use you calculator to confirm!) The only pair that satisfies is (4,2).
\n" ); document.write( "
\n" );