Question

1 )Efectuati calculele urmatoare,scriin rezultatul sub forma de putere:
a) (5\7)la puterea 3 ori (5\7)la puterea 2
b)(-2\3) la puterea 3 ori (-2\3)la puterea 4
c)(-2\9) ori (-2\9) la puterea 2 ori (-2\9) la puterea 3
d)(2\5)la puterea 6 : (2\5) la puterea 4
e)(-3 (pe langa fractia)1\4)la puterea 20 : (-3 (pe langa fractia) 1\4)la puterea 5
f)(4\11)la puterea 8 ori (4\11) la puterea 6 ori (4\11) la puterea 2 : (4\11) la puterea 6
g)(-1\7)la puterea 5 : (-1\7) la puterea 3
h)(3\7) la puterea 8 :(3\7) la puterea 7 : (3\7)
i)(8\13)la puterea 20 : (8\13)la puterea 12 : (8\13) la puterea 5


2)Efectuati calculele urmatoarte,scriind rezultatul sub forma de putere :
a) (- 1\2) la puterea 4 : (-1\2) la puterea 2
b) (4\-3) la puterea 7 : (-4\3) la puterea 6
c) (-7\3) la puterea 21 ori (-3\7) la puterea 21

Answer 1

a) (5\7)³ * (5\7)²= (5/7)⁵
b)(-2\3)³ * (-2\3)⁴=(-2/3)⁷
c)(-2\9) * (-2\9) ² *  (-2\9)³=(-2/9)⁶
d)(2\5)⁶ : (2\5) ⁴=(2/5)²
e)(-3 *1/4)²⁰ : (-3 *1\4)⁵=(-3 *1\4)¹⁵
f)(4\11)⁸ * (4\11)⁶ * (4\11) ² : (4\11)⁶=(1/4)¹⁰
g)(-1\7)⁵ : (-1\7) ³=(-1/7)²
h)(3\7) ⁸ :(3\7) ⁷ : (3\7)= 3/7
i)(8\13)²⁰ : (8\13)¹² : (8\13) ⁵=(8/13)³


a) (- 1\2) ⁴ : (-1\2) ²=(-1/2)²
b) (4\-3)⁷ : (-4\3)⁶= (-4/3)¹
c) (-7\3) ²¹ * (-3\7) ²¹=(-3/7)¹