Ответ:

1.

1) a⁵ · a⁷ = a¹²

2) a³ · a¹⁰ = a¹³

3) a⁸ · a = a⁹

4) a · a² · a¹⁰ = a¹³

5) (x + y)⁷ · (x + y)⁶ = (x + y)¹³

2.

1) a¹² : a³ = a⁹

2) b⁸ : b = b⁷

3) a¹⁵ : a¹⁵ = 1

4) a⁶ : a⁵ = a

3.

1) (a⁵)¹⁰ = a⁵⁰

2) (a⁴)⁰ = 1

3) ((a⁵)⁴)³ = (a²⁰)³ = a⁶⁰

4) (a⁸)¹ = a⁸