## Algebra 1

C. $7x^{2}$ + 11x + 8
Original expression is: ($3x^{2}$ + 6x - 1) + ($4x^{2}$ + 5x + 9) Simplify the brackets $3x^{2}$ + 6x - 1 + $4x^{2}$ + 5x + 9 Combine like terms. $3x^{2}$ + $4x^{2}$ + 6x + 5x + 9 - 1 $7x^{2}$ + 11x + 8