1)Określ dziedzinę wyrażenia.
a) 3Х²+1/2x-1=
b) x³/x²-3=
c) x²+x-1/2x²+5x=
a)D=R-{1/2}
b)D=
c)D=R-{0;2,5}
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a)D=R-{1/2}
b)D=
c)D=R-{0;2,5}