(1)x-1分之x减1-x²分之2=1;
x/(x-1)-2/(1-x²)=1;
(x(x+1)+2)/(x²-1)=1;
(x²+x+2)/(x²-1)=1;
x²+x+2=x²-1;
x=-3;
(2)x-2分之x减x²-4分之x+14=x+2分之2x减1
x/(x-2)-(x+14)/(x²-4)=(2x-1)/(x+2);
x(x+2)-(x+14)=(2x-1)(x-2);
x²+2x-x-14=2x²-4x-x+2;
x²-6x+16=0;
Δ=36-64<0;
所以无解
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