Ответ:
х=4-4х+х²
-(4-х)+х×(4-х)=0
(4-х)(1-х)=0
4-х=0
1-х=0
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Ответ:
х=4-4х+х²
-(4-х)+х×(4-х)=0
(4-х)(1-х)=0
4-х=0
1-х=0