(3y^2-3y+1)-(4y-2y^2)
(9y-3y+1)-(4y-4y)
(6y+1)-0*y
6y+y-0+1
7y-1
6y
y=6
Наверное
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(3y^2-3y+1)-(4y-2y^2)
(9y-3y+1)-(4y-4y)
(6y+1)-0*y
6y+y-0+1
7y-1
6y
y=6
Наверное