MULTIPLICATION AND DIVISION OF ALGEBRAIC NUMBERS

3 b 7 c 8 and 3 a 4 b 2 c .

6. $2a$ and $-5a$.

7. $-3a$ and $-4b$.

8. $-ab$ and $a^3{b}^2$.

9. $-2a{b}^4$ and $-5a^{4}bc$.

10. $-2x^6{y}^{3}z$ and $-6x{y}^{2}z$.

11. $3a^{2}b$, $-5a{b}^2$, and $-7a^4{b}^2$.

12. $2a^{2}b{c}^3$, $-3a^3{b}^{2}c$, and $-a{b}^2{c}^3$.

13. $2b^2{c}^2{x}^2$, $2a^2{b}^2{c}^3$, and $-3a^{3}b{x}^3$.

14. $2a^3{b}^{2}c$, $-3a^2{b}^{3}c$, and $-4a^{2}b{c}^3$.

15. $7a{m}^2{x}^3$, $3a^4{m}^2{x}^3$, and $-2amx$.