oblicz :
a) 6 1/2 - 4 5/6 - 1 1/3 = ...
b) 11 1/3 - 5 4/6 = ...
oblicz i sprawć :
a) 1 1/4 + b = 4 2/7
b) 1 1/5 - a = 5/6
oblicz :
a) (3/5) do potęgi 2 = ...
b) (4/6) do potęgi 2 = ...
I jak by ktoś chodzi jub chodził i ma ćwiczenie to ćwiczenie 5 strona 79
z góry dziękuje
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a) 6i1/2 -4 i5/6 -1 i1/3 = 6 i3/6 - 4i5/6- 1 i 2/6 = 5 i 9/6 - 5 i 7/6 = 2/6 = 1/3
b) 11i 1/3 - 5 i4/6 = 11 i 2/6 - 5 i 4/6 = 10 i 8/6 - 5 i 4/6 = 5 i 4/6 = 5 i 2/3
Oblicz i sprawdz
a) 1 i 1/4 + b = 4 i 2/7
b = 4 i 2/7 - 1 i 1/4
b = 4 i 8/28 - 1 i 7/28
b = 3 i 1/28
Spr.
1 i 1/4 + 3 i 1/28 = 4 i 2/7
1 i 7/28 + 3 i 1/28 = 4 i 2/7
4 i 8/28 = 4 i 2/7
4 i 2/7 = 4 i2/7
L = P
b) 1 i1/5 - a = 5/6
- a = 5/6 - 1 i 1/5
- a = 25/30 - 1 i 6/30
- a = 25/30 - 36/30
- a = - 11/30 /*(-1)
a = 11/30
Spr.1 i 1/5 -11/30 = 5/6
1 i 6/30 - 11/30 = 5/6
36/30 - 11/30 = 5/6
25/30 = 5/6
5/6 = 5/6
L = P
Oblicz
a) (3/5) ^2 = 3/5 * 3/5 = 9/25
b) (4/6) ^2 = 4/6 * 4/6 = 16/36