Answer:
10) 87.96 in
15) 272,944.7 in
Answer: 8n
Let's simplify step-by-step.
(2(n+1)−1)2−(2n−1)2
Distribute:
=4n2+4n+1+−4n2+4n+−1
Combine Like Terms:
=(4n2+−4n2)+(4n+4n)+(1+−1)
=8n
scan it plz its really easy if you scan them
