Answer :
Answer:
Step-by-step explanation:
[tex]i^{100} - i^{80}=i^{2*50} -i^{2*40}\\\\=(i^{2})^{50}-(i^{2})^{40}\\\\=(-1)^{50}-(-1)^{40}\\\\[/tex]
= 1 - 1
= 0
Answer:
Step-by-step explanation:
[tex]i^{100} - i^{80}=i^{2*50} -i^{2*40}\\\\=(i^{2})^{50}-(i^{2})^{40}\\\\=(-1)^{50}-(-1)^{40}\\\\[/tex]
= 1 - 1
= 0