2а^3+9-2(а+1)(а^2-а+1)

Question

2а^3+9-2(а+1)(а^2-а+1)

Answer 1

2а^3+9-2а^3-2=7......

Answer 2

Решение
2а^3+9-2(а+1)(а^2-а+1) = 2a³ + 9 - 2*(a³ + 1) = 2a³ + 9 - 2a³ - 2 = 7