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Ответ:

a. [tex]x_{1} =0\\x_{2} =2[/tex]

б. [tex]x_{1} =0\\x_{2} =0,2[/tex]

Объяснение:

а. [tex]x(x-2)=0\\x_{1} =0\\x-2=0\\x=0+2\\x_{2} =2[/tex]

б. [tex]x(5x-1)=0\\x_{1} =0\\5x-1=0\\5x=0+1\\5x=1\\x=1/5\\x_{2} =0,2[/tex]