(x^2-2x-3)/(x^2+2x+1)
=(x-3)(x+1)/(x+1)²
=(x-3)/(x+1);
(x^2+x-2)/(x+2)
=(x+2)(x-1)/(x+2)
=x-1;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,