Answer:
1. 55r^13 + 25r^10 + 35r^7
2. 48u^8 – 36u^7 – 24u^6 + 48u^2
3. 91a^10 + 70a^9 + 6a^7 + a^6 + 63a^4
4. 44x^7 + 88x^6 – 11x^5
5. –7d^13 + 6d^8 + 67d^7 + 58d^6
6. –32n^6 – 70n^5 + 40n^4 – 6n^2 + 2n
7. –2q^12 + 8q^11 + 4/9 q^10
8. –36z^14 – 27z^11 + 12z^8 + 57z^7
Explanation:
USE DISTRIBUTIVE PROPERTY!
then arrange them, biggest power always comes first