Chapter 8 - Polynomials and Factoring - 8-1 Adding and Subtracting Polynomials - Practice and Problem-Solving Exercises - Page 490: 40

-6$w^{4}$+2$w^{3}$-3$w^{2}$+w

(-6$w^{4}$+$w^{2}$)-(-2$w^{3}$+4$w^{2}$-w) - Given expression -6$w^{4}$+$w^{2}$+2$w^{3}$-4$w^{2}$+w - Take out parenthesis. -6$w^{4}$+2$w^{3}$-3$w^{2}$+w - Combine like-terms and put terms in order