What's the best way to do that?

```
Find two polynomials whose four points of intersection form a perfect square.
(...with integer coefficients?)
```

— James Tanton (@jamestanton) July 5, 2014

```
@jamestanton 13*x^3/15+13*x^2/10-137*x/30 & x^4+43*x^3/15-37*x^2/10-317*x/30 go through square with vertices (0,0), (2,3), (-1,5), (-3,2)
```

— Republic of Math (@republicofmath) July 5, 2014

. .

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