k=-2程解x/(x-1)+k/(x-1)-x/(x+1)=0两边同乘(x-1)(x+)x(x+1)+k(x+1)-x(x-1)=0x²+x+kx+k-x²+x=0(k+2)x+k=0(k+2)x=-kx=k/(k+2)k=-2母0数意义程解高兴您解答祝习进步【数美】团队您答题明白追问您认我答请点击面【选满意答】按钮谢谢
