Question

Упрости выражение (8−y)⋅(64−y2)+(8+y)⋅(64+y2)−2⋅y⋅(8+y)⋅(y−8).

Answer 1

$(8 - y) \times (64 - {y}^{2} ) + (8 + y) \times (64 + {y}^{2} ) - 2y \times (8 + y) \times (y - 8) \\ 512 - 8 {y}^{2} - 64y + y {}^{3} + 512 + 8 {y}^{2} + 64y + y {}^{3} - 2y \times (y + 8) \times (y - 8) \\ 512 + y {}^{3} + 512 + y {}^{3} - 2y {}^{3} + 128y \\ 1024 + 0 + 128y \\ 1024 + 128y$