Instruction: Divide. Write the answer as a polynomial or a mixed expression.

1. (x^2+6x+8)÷(x+2) =
2. (x^2+7x+10)÷(x+5) =
3. (2y^2+5y+2)÷(y+2) =
4. (2y^2-13y+21)÷(y-3) =
5. (3y-y^2+2y^3+2)÷(2y+1) =