Zad 4 str 72 - Oblicz e) ( 5/9 ) do -1 f) (2/3) do -3 g) ( 1 cała i 1/4) do -3 h) (3 całe i 1/3 ) do -4 prosze o rozwiazanie daje naj !! pilne ☺

e).(5/9)⁻¹ = (9/5)¹ = 9/5 = 1 i 4/5 f).(2/3)⁻³ = (3/2)³ = 3/2·3/2·3/2 = 27/8 = 3 i 3/8 g).(1 i 1/4)⁻³ = (5/4)⁻³ = (4/5)³ =4/5·4/5·4/5 = 16/5·4/5 = 64/125 h).(3 i 1/3)⁻⁴ = (10/3)⁻⁴ = (3/10)⁴ = 3/10·3/10·3/10·3/10 = 27/1000·3/10 =   =81/10000

e) (5/9)^-1=(9/5)^1=9/5 f) (2/3)^-3=(3/2)^3=27/8 g) (1 1/4)^-3=(5/4)^-3=(4/5)^3=64/125 h) (3 1/3)^-4=(10/3)^-4=(3/10)^4= 81/100000