x+3/x+2-2-x/x^2-4解分式 八下数学知识
问题描述：
x+3/x+2-2-x/x^2-4解分式 八下数学知识
答
原式=(x+3)/(x+2)+(x-2)/(x+2)(x-2)
=(x+3)/(x+2)+1/(x+2)
=(x+3+1)/(x+2)
=(x+4)/(x+2)题输错了、、（x+3）/（x+2）+（2-x）/（x^2-4）原式=(x+3)/(x+2)-(x-2)/(x+2)(x-2) =(x+3)/(x+2)-1/(x+2) =(x+2)/(x+2) =1