Question

Prosze o zrobienie zadania 9 i 10 ten podręcznik to Matematyka z plusem do 3 gim. napisałam tam jeszcze ołówkiem jaka jest odległość od punktu do puktu czekam na prawidłową odpowiedz ;D Pozdro ola1411

Answer 1

9.
(-1/3)^2 = 1/9 = D
-0,(7) = A
-0,(70) = B
(-1/3)^3 = (-1/27) = C
(8/9)^(-1) = 9/8 = F
(8/9)^2 = 64/81 = E

10.
a)
2^3 = 8
(3/5)^2 = 9/25
(-1)^5 = -1
(-7)^0 = 1 

b)

(1 i 2/5)^2 = (7/5)^2 = 49/25
(-2 i 1/2)^3 = (-5/2)^3 = -125/8
-1,2^2 = -(12/10)^2 = -144/100 = -36/25 
-4^3 = -64 
c)

2^(-1) = 1/2
3^(-2) = (1/3)^2 = 1/9
(1/2)^(-2) = 2^2 = 4 

2^(-3) = (1/2)^3 = 1/8
d)

(7/9)^(-1) = 9/7
(-1 i 1/2)^(-1) = (-3/2)^(-1) = -2/3

0,5^(-2) = (1/2)^(-2) = 2^2 = 4
(-1,3)^(-2) = (-13/10)^(-2) = (-10/13)^2 = 100/169