-3×3+6×y2+8y3 + 7×2y+8×y2 -5y3

-3y^2 + 8y^3 + 14y + 8y^2 - 5y^3
= (-3 + 8) y^2 + (8 - 5)y^3 + 14y
= 5y^2 + 3y^3 +14y
= 3y^3 + 5y^2 + 14y

3+7+6xy2+8xy2+8y3-5y3
10+14xy2+3y3
maaf kalau salah????