Question

Gente ajuda PF... E 9 ano

Answer 1

Onwwwwwwt! :3

Resolução:

2^-3 + 3^-2 - ( 1/2 )³

( 1/2 )³ + ( 1/3 )² - ( 1/8 )

1/8 + 1/9 - 1/8

1/9 - 1/8 + 1/8

1/9 + 0

1/9

Espero ter ajudado! ✌

Answer 2

Ola Lorraine

1)

2^-3 = 1/8 
3^-2 = 1/9
(1/2)^3 = 1/8

1/8 + 1/9 - 1/8 = 1/9

2)

a = 4/3, b = -2

a^-2 = 9/16 , b^-4 = 1/16

2*9/16 + 1/16 = 19/16 

3)

a) 5^-2*10 = 10/25 = 2/5 

b) 8/2^-1 = 16

c) 1/9*(8/64)^-3 = (1/9)*512 = 512/9 

d) 1/5 + 1/10 = 3/10 

e) 1/32 - 1/8 = 1/32 - 4/32 = -3/32 

f) (1/9 + 1/6)^-2 = (15/54)^-2 = (54/15)^2 = (18/5)^2 = 324/25 

g) (125/100)^-2 = (5/4)^-2 = (4/5)^2 = 16/25 

4)

a = 9 - 1/16 = 143/16 

b = (1/3 + 1/2)-^3 = (5/6)^-3 = (6/5)^3 = 216/125 

a^-2 = (16/143)^2 = 256/20449

6b = 6*216/125 = 1296/125 

a^-2/6b = (256/20449)/(1296/125) = 2000/1656369