99又3分之1×100又3分之2= 2（3+1）（3²+1）·∧·（3的32次+1）+1= 9(3分之1x+2

99又3分之1×100又3分之2=（100-2/3）(100+2/3)=10000-4/9=9999又5/9
2（3+1）（3²+1）·∧·（3的32次+1）+1
=2*(1/2)(3-1)(3+1)(3^2+1)*.*(3^32+1)+1
=(3^2-1)(3^2+1)*.*(3^32+1)+1
=(3^64-1)+1
=3^64
9(3分之1x+2)(x-6)-(-2x)²
=(3x+18)(x-6)-4x^2
=3(x+6)(x-6)-4x^2
=3x^2-108-4x^2
=-x^2-108