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Dziedzina: x-2≠0 => x≠2
D=R-{2}
m.zerowe:
x+3=0
x= -3
b)
√1x + √1 = 0
√1x= -√1 |:√1
Dziedzina:
D= x= -1
m.zerowe:
x+1=0
x= -1