Question

Kto pomoze wg nie wiem jak to zrobic ...

1. ((-1 1/2) do potegi 2 - (-1 1/3) do potegi 2 ): 4 1/2

(te 1/2 to jest jedna druga jak cos ).

2. 4/5:(1/2 -1/5)-(2/3-(3/9- 1 1/3 ))

3. 3/5 -(1,4 * 5/14 - 0,9/32): -1/5

4.((1/3 - 1/2) : (5/3 -5/4)-(0,25 - 3/8 :0,625)

PROSZE O POMOC O ROZWIAZANIE TEGO!!

Answer 1

1. ((-1 1/2)² - (-1 1/3)²) : 4 1/2 = ((-3/2)² - (4/3)²) : 9/2 = (9/4 - 16/9) : 9/2=

= (81/36 - 64/36) : 9/2 = 17/36 · 9/2 = 17/162

 

2. 4/5 : (1/2 - 1/5) - (2/3 - (3/9 - 4/3)) = 4/5 : (5/10 - 2/10) - (2/3 - (3/9 - 12/9)=

= 4/5 : 3/10 - (2/3 - (-9/9) = 4/5 · 10/3  - 5/3 = 4/3 - 5/3 = - 1/3

 

3. Na pewno nie ma tu błędu 0,9/32 ?

 

4. ((1/3 - 1/2) : (5/3 - 5/4) - (1/4 - 3/8 : 5/8) = (2/6 - 3/6) : 5/12 - (1/4 - 3/5) =

= -1/6 : 5/12 - (-7/20) = -2/5 + 7/20 = 1/20