( / x /-2)(1 + x)= 0 и x ^ ( 2 ) + 2x = 0
1)/х/-2=0, /х/=2, х=-2, х=2;
1+х=0, х=-1;
2)х(х+2)=0, х=0, х+2=0, х=-2.
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1)/х/-2=0, /х/=2, х=-2, х=2;
1+х=0, х=-1;
2)х(х+2)=0, х=0, х+2=0, х=-2.