Use Compute instead of Formula in answer

Author: gajennings

OpenProblemLibrary/PCC/BasicAlgebra/RationalFunctions/rationalFunctionAsymptote30.pg

@@ -59,7 +59,7 @@ $c = non_zero_random(-10,10,1);
 do {$f = RandomVariableName();} until ($f ne 'x');
 $func = Compute("$c/(x**2+$a*x+$b)")->reduce;
 
-$ans = List(Formula("x=$x1"),Formula("x=$x2"));
+$ans = List(Compute("x=$x1"),Compute("x=$x2"));
 $var = 'x';
 
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