Question

Oblicz: (1 gimnazjum książka zadanie 71 strona 54)
a) -1 1/4*(-4)
b)-6 2/3:2
c)-0,2*(-0,2)
d)-3 1/3*(-3)
e)(-3)do potęgi 2*1/3
f)(1/3) do potęgi 2*(-9)
g)-6 do potęgi 2:1/2
h)3 3/4:(-1,25) do potęgi 2
;))))

Answer 1

A) 
-1 i 1/4 * (-4) = 
- 5/4 * (-4) = 20/4 = 5

b)
-6 i 2/3 : 2 = 
-20/3 : 2 =
-20/3 * 1/2 = -20/6 = -3 i 2/6 = - 3 i 1/3

c) -0,2 * (-0,2) = 
-2/10 * (-2/10)=
-1/5 * (-1/5) = 1/25 = 0,04

d) 
-3 i 1/3 * (-3) = 
-10/3 * (-3) = 30/3 = 10

e)
(-3)² * 1/3 = 
9 *1/3 = 9/3 = 3

f)
(1/3)² * (-9) = 
1/9 * (-9) = -9/9 = -1

g) 
-6² : 1/2 = 
-36 * 2/1 = 
-72/1 = -72

h)
3 i 3/4 : (-1,25)² = 
15/4 : (-1 i 1/4)²=
15/4 : (-5/4)² = 
15/4 : 25/16 = 
15/4 * 16/25 =
240/100 = 2 i 40/100= 2 i 4/10 = 2 i 2/5