急求：matlab解二元二次方程组！！

(x+100)^2+y^2-1.9696xy-196.96y-90000=0
(x-100)^2+y^2-1.4142xy+141.42y-90000=0
用
syms x y;
solve('y^2+(x+100)^2-1.9696xy-196.96y-90000=0','(x-100)^2+y^2-1.4142xy+141.42y-90000=0','x','y')
按回车键怎么提示
Error using ==> solve>getEqns at 202' y^2+(x+100)^2-1.9696xy-196.96y-90000=0 ' is not a valid expression or equation.
Error in ==> solve at 67[eqns,vars] = getEqns(varargin{:});

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应该是和旅悔
1.9696xy中唤正间要乘镇绝号：1.9696*x*y

196.96y 1.4142xy 141.42y也是的

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