7ву+4в-14у-8= 7у(в-2)+4(в-2)=(в-2)(7у+4)
(2\7-2)(7×5\28+4)= -12\7×(5\4+4)=- 12\7×21\4=-3×3=-9
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7ву+4в-14у-8= 7у(в-2)+4(в-2)=(в-2)(7у+4)
(2\7-2)(7×5\28+4)= -12\7×(5\4+4)=- 12\7×21\4=-3×3=-9