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

$16x^{3} + 7x^{2} -3x -13$
$(8x^{3} + 7x^{2} +4x -7)+(8x^{3}-7x-6)$ Combine like terms: $(8x^{3} +8x^{3}+ 7x^{2} +4x-7x -7-6)$ Simplify: $16x^{3} + 7x^{2} -3x -13$