八下数学通分,在线等,跪求!4a/5b²与3c/10a²2/x-1与x-1/1-xx/x²-1与2/x²+2x+2x+2/x²-2x与x-1/x²-4x+42/a²b与3/4ab²1/x-y与1/x+y1/x²-y²与1/x²+xy

Question

八下数学通分,在线等,跪求!
4a/5b²与3c/10a² 2/x-1与x-1/1-x x/x²-1与2/x²+2x+2 x+2/x²-2x与x-1/x²-4x+4
2/a²b与3/4ab² 1/x-y与1/x+y 1/x²-y²与1/x²+xy

Answer 1

8a³/10a²b² 3b²c/10a²b²
2/x-1 1-x/x-1
x(x²+2x+2)/x²-1(x²+2x+2) 2(x²-1)/x²-1(x²+2x+2)
(x²-4)/x(x-2)² (x-1)(x-2)/x(x-2)²
8ab/4a²b² 3a/4a²b²
x+y/x²-y² x-y/x²-y²
x/x(x²-y²) x-y/x(x²-y²)