SymPy Gamma

Input:

DiracDelta%28x%2A%2A2 %2B x - 2%29.simplify%28x%29

Error:

DiracDelta%28x%2A%2A2 %2B x - 2%29.simplify%28x%29

unsupported operand type(s) for %: 'FunctionClass' and 'Integer'

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