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Input:
solve(x^2+%2Bb*x+%2Bc=0)
Write:
`solve(x^2+%2Bb*x+%2Bc=0)`
Compute:
$$solve(x^2+%2Bb*x+%2Bc=0)$$
Output:
$$solve(x^2+%2Bb*x+%2Bc=0)== `Input ERROR: vmath.expression.SyntaxException: Unknown expression: x^2+%2Bb*x+%2Bc=0`$$
Result: $$`Input ERROR: vmath.expression.SyntaxException: Unknown expression: x^2+%2Bb*x+%2Bc=0`$$
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