(4.9+3.5х)(7х-2.8)=0
Ответ
1
(4.9+3.5х)(7х-2.8)=0
34,3х-13,72+24,5-9,8х=0
24,5х=-10,78
х=-0,44
Ответ
0
(4.9+3.5х)(7х-2.8)=0
34.3х-13.72+24.5-9.8х=0
24.5х=-10.78
х=-0.44