Answer:
7-2y-2y^2
Explanation:
2-4y-7y^2+5y^2+5+4y-2y
7-4y-7y^2+5y^2+4y-2y
7-2y-7y^2+5y^2
−2y2−2y+7
−4y−7y2+5y2+7+4y−2y
=−7y2+5y2+7+0−2y
=−2y2+7+0−2y
=−2y2−2y+7
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