\(8a^3a^2 - 4a-5-5a(a-2) = \)
\(8a^5 - 4a - 5 -5a^2-2a = \)
\(8a^5 -5a^2 - 6a - 5 \)
nearest thousand : 2707,000
sci notation: 2.707 x 10^6