## Algebra: A Combined Approach (4th Edition)

4$x^{2}$ + 2x - 4
(7$x^{2}$ + 2x -9 ) + ( -3$x^{2}$ + 5) = ( 7$x^{2}$ -3$x^{2}$ )+ 2x + (-9 +5) = combine like terms 4$x^{2}$ + 2x - 4