syms x y z b e
eq1 = (e-19.425)*x+8.42*b-400;
eq2 = (e-19.425)*y+81.79*b-3200;
eq3 = (e-19.425)*z-70;
eq4 = -0.0368*x*y-0.0333*y^2+5.633*y-106.8857+6.2908*x-0.0351*x^2-z;
eq5 = b+e-63.75;
A = solve(eq1,eq2,eq3,eq4,eq5,x,y,z,b,e)
A =
b: [2x1 sym]
e: [2x1 sym]
x: [2x1 sym]
y: [2x1 sym]
z: [2x1 sym]
>> A.x
ans =
(53567*6194453222828443095725179342147819^(1/2))/944630750721331953664 + 7702778382938654/900870085450489
7702778382938654/900870085450489 - (53567*6194453222828443095725179342147819^(1/2))/944630750721331953664
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