∴
1 |
3xy3 |
6x2 |
3xy3?6x2 |
6x2 |
18x3y3 |
1 |
2x2y |
9xy2 |
2x2y?9xy2 |
9xy2 |
18x3y3 |
1 |
9x3y |
2y2 |
9x3y?2y2 |
2y2 |
18x3y3 |
(2)∵最簡(jiǎn)公分母是(a-b)(a+b)2,
∴
1 |
(a+b)2 |
a?b |
(a+b)2(a?b) |
2 |
?a+b |
2 |
a?b |
2(a+b)2 |
(a+b)2(a?b) |
3 |
a2?b2 |
3 |
(a+b)(a?b) |
3(a+b) |
(a+b)2(a?b) |
1 |
3xy3 |
1 |
2x2y |
1 |
9x3y |
1 |
(a+b)2 |
2 |
?a+b |
3 |
a2?b2 |
1 |
3xy3 |
6x2 |
3xy3?6x2 |
6x2 |
18x3y3 |
1 |
2x2y |
9xy2 |
2x2y?9xy2 |
9xy2 |
18x3y3 |
1 |
9x3y |
2y2 |
9x3y?2y2 |
2y2 |
18x3y3 |
1 |
(a+b)2 |
a?b |
(a+b)2(a?b) |
2 |
?a+b |
2 |
a?b |
2(a+b)2 |
(a+b)2(a?b) |
3 |
a2?b2 |
3 |
(a+b)(a?b) |
3(a+b) |
(a+b)2(a?b) |