(x+1)(2x-3)(7-x)=0
Wyznacz x oraz dziedzinę równania.
D=Rx+1=0
x=-1
2x-3=0
x=1,5
7-x=0
x=7
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D=R
x+1=0
x=-1
2x-3=0
x=1,5
7-x=0
x=7