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a) 3/18
b) -1 1/2
c) -0,00035
2.
b) a = -3 , b= -26
c) a= 211 . b=200
3.
a) 1,5
b) 3
c) -2
4.
a) 2,(3)
b)- 2,(5)
c) 3,(9)
5.
a) 4,(3) i 5,(9)
b) -√102 i -10,(5)
c) -0,(5) i -0,6666
6. całkowite : -1 , 0 , 1 , 2
naturalne: 0 , 1 ,2 , 3 , 4 , 5, 6