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735;21
x^2+x;x^2-1
0.1137097567*x+0.14625*y+0.09408*z-0.625;1.196773982*x+0.5*y+0.1137097567*z+4/3;0.5*x+1.665*y+0.14625*z-0.5
480;15
1/(5*x-2*x^2)
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