Question

( / x /-2)(1 + x)= 0 и x ^ ( 2 ) + 2x = 0

Answer 1

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.