The term biquadratic equation is identified in base64 scheme by the sequence YmlxdWFkcmF0aWMgZXF1YXRpb24=, while the MD5 signature is equal to 572764bb91faa6fc76a46dc0c05c646f. The ASCII encoding of biquadratic equation in hexadecimal notation is 6269717561647261746963206571756174696f6e.