Equation can't solve with 2.15 but 2.10 can

[peacecalc]

Hello PINUBALL,

try:

stack (3): [ 'x^2+x*y=10' 'y+3*x*y^2=57']
stack (2): ['X' 'Y']
stack (1): [1 1] initial guess

and use command MSLV, you get [2.000 3.000].