Объяснение:
S9=(2a1+8d/2)9
a1=2
a9=a1+8d=2+8×4=34
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Объяснение:
S9=(2a1+8d/2)9
a1=2
a9=a1+8d=2+8×4=34