## Make {(x^2 + xy + y^2), (x^2 + xz + z^2), (y^2 – yz + z^2)} squares … Part 2

Find distinct integers   $x, \; y, \; z$   to make the three expressions squares

$x^2 \; + \; x \, y \; + \; y^2$
$x^2 \; + \; x \, z \; + \; z^2$
$y^2 \; - \; y \, z \; + \; z^2$