a) ( b^2 + 2b + 1 + 6b^2 - 3b )( a = 7b^2 + 2b + 1 )
б) ( (y^2 + 2xy) - (x + y))^2 )( y^2 + 4xy + 4x^2 - 2xy - 2y - 2xy - 4x^2 - 4xy - y^2 )( y^2 + 4xy + 4x^2 - 2y - 4y )( y^2 + 4xy + 4x^2 - 6y )
в) ( b^2 + 8b + 16 - (b^2 - 3b + eb - 3e) )( b^2 + 8b + 16 - b^2 + 3b - eb + 3e )( 8b + 16 + 3b - eb + 3e )
a) ( b^2 + 2b + 1 + 6b^2 - 3b )
( a = 7b^2 + 2b + 1 )
б) ( (y^2 + 2xy) - (x + y))^2 )
( y^2 + 4xy + 4x^2 - 2xy - 2y - 2xy - 4x^2 - 4xy - y^2 )
( y^2 + 4xy + 4x^2 - 2y - 4y )
( y^2 + 4xy + 4x^2 - 6y )
в) ( b^2 + 8b + 16 - (b^2 - 3b + eb - 3e) )
( b^2 + 8b + 16 - b^2 + 3b - eb + 3e )
( 8b + 16 + 3b - eb + 3e )