Step-by-step explanation:
1. 1/-[infinity] = 0
2. 0 - [infinity] = -β
3. 0[infinity] = 0
4. [infinity][infinity] = IND
5. 0β[infinity] = -β
6. [infinity]β[infinity] = β
7. [infinity]βe = β
8. 1[infinity] = β
9. Οβ[infinity] = -β
10. Ο[infinity] = β
11. 1 β[infinity] = -β
12. [infinity]1 = β
13. [infinity]β[infinity] = β
14. 0/[infinity] = IND
15. [infinity]0 = 0
16. 00 = 0
17. 10 = 10
18. 1 - [infinity] = -β
19. [infinity]/0 = DNE
20. inf - inf = β