texmath-0.12.5: test/roundtrip/msqrtB7.native

[ ESqrt
    (EGrouped [ EIdentifier "x" , ESymbol Bin "-" , ENumber "3" ])
, ESymbol Bin "+"
, ESqrt (EGrouped [ ENumber "3" , EIdentifier "x" ])
, ESymbol Bin "+"
, ESqrt
    (EFraction
       NormalFrac
       (ESqrt (EGrouped [ ENumber "3" , EIdentifier "x" ]))
       (EGrouped [ EIdentifier "x" , ESymbol Bin "-" , ENumber "3" ]))
]