Объяснение:
№1
а) х-⁴ : х³ = х-⁷
б) а-¹² * а⁷ = а-⁵
в) (в-⁵)⁵ = в-²⁵
г) (3/х)-¹ = х/3
№2
а) 3⁵ : 3⁶ = 3-¹ = 1/3
б) 9 : 9-¹ = 9¹ : 9-¹ = 9² = 81
в) -32-² = -1/(32²) = -1/1024
г) (5-¹³)/(5-¹⁴) = 5¹ = 5
№3
3 1/2х-¹⁹у-⁵ : (-7/4х-¹⁶у-⁷) =
-7/2х-¹⁹у-⁵ : (7х-¹⁶у-⁷)/4 =
-7/2х-¹⁹у-⁵ * 4/(7х-¹⁶у-⁷) =
-у² * 2/(х³) = - (2у²)/(х³)
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Answers & Comments
Объяснение:
№1
а) х-⁴ : х³ = х-⁷
б) а-¹² * а⁷ = а-⁵
в) (в-⁵)⁵ = в-²⁵
г) (3/х)-¹ = х/3
№2
а) 3⁵ : 3⁶ = 3-¹ = 1/3
б) 9 : 9-¹ = 9¹ : 9-¹ = 9² = 81
в) -32-² = -1/(32²) = -1/1024
г) (5-¹³)/(5-¹⁴) = 5¹ = 5
№3
3 1/2х-¹⁹у-⁵ : (-7/4х-¹⁶у-⁷) =
-7/2х-¹⁹у-⁵ : (7х-¹⁶у-⁷)/4 =
-7/2х-¹⁹у-⁵ * 4/(7х-¹⁶у-⁷) =
-у² * 2/(х³) = - (2у²)/(х³)