1.将下列各式通分(1) (2) 1 3 y+3 1 y-1_____ ,______ _________ ,_________,_数学解答

1.将下列各式通分
(1) (2)
1 3 y+3 1 y-1
_____ ,______ _________ ,_________,___________
a2-2a a2-4 y2-6y+9 2y+6 y2-9

人气：370 ℃　时间：2020-02-06 02:37:35

解答

(a+2)/a(a²-4);3a/a(a²-4);
2(y+3)²/2(y-3)²(y+3);(y-3)²/2(y-3)²(y+3);2(y-1)(y-3)/2(y-3)²(y+3);