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

3$x^{5}$ -4$x^{3}$ - 1
(3$x^{5}$ - 7$x^{3}$ + 2x - 1) + (3$x^{3}$ - 2x) 3$x^{5}$ - 7$x^{3}$ + 2x - 1 + 3$x^{3}$ - 2x Remove paranthesis 3$x^{5}$ + (-7$x^{3}$ + 3$x^{3}$) + (2x- 2x) - 1 Combine like terms 3$x^{5}$ -4$x^{3}$ - 1