2)-6,8(x-4)=0
х-4=0
х=4
3)(x+7,2)×(x-8,1)=0
х=-7,2; х=8,1
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2)-6,8(x-4)=0
х-4=0
х=4
3)(x+7,2)×(x-8,1)=0
х=-7,2; х=8,1