有无穷多解呢
随便找10个如下:
{{x -> 934, y -> 1, z -> -933}, {x -> 613, y -> 1,
z -> -612}, {x -> 989, y -> 1, z -> -988}, {x -> 688, y -> 1,
z -> -687}, {x -> 3, y -> 1, z -> -2}, {x -> 71, y -> 1,
z -> -70}, {x -> 2, y -> 1, z -> -1}, {x -> 134, y -> 1,
z -> -133}, {x -> 782, y -> 1, z -> -781}, {x -> 90, y -> 1,
z -> -89}}