-The third power of 2A * the square of B + the square of 8A * the square of B - the square of 8A * B

-The third power of 2A * the square of B + the square of 8A * the square of B - the square of 8A * B

-The third power of 2A * the square of B + the square of 8A * the square of B - the square of 8A * B
=-The square of a * B (the square of a - 4A + 4)
=-The square of a * B (A-2)