Question

设ab≠0，化简式子a3b-3

1

2

•a-2b2

1

3

•ab5

1

6

的结果是______．

Answer 1

a3b-3

1

2

•a-2b2

1

3

•ab5

1

6

=a3-2+1b-

7

2

+

7

3

+

31

6

=a2b4
故答案为：a²b⁴．