Question

Ex 9


Pls dau coroana

Answer 1

9. a) [-0,(3)]-² = (-1/0,3)² = 1²/(0,3)² = ¹⁰⁰) 1/0,09 = 100/9

b) 3-² = (1/3)² = 1²/3² = 1/9

c) (2/3)-³ = (3/2)³ = 3³/2³ = 27/8

d) (-0,25)-¹ = (-1/0,25)¹ = ¹⁰⁰)-1/0,25 = -100/25 = -4

e) (0,1)-³ = (1/0,1)³ = 1³/0,1³ = ¹⁰⁰⁰)1/0,001 = 1000/1 = 1000

f) (-1/2)-² = (-2)² = 4