12 3 x 5 2 4 July 8, 2019 16 32 64 128 12 1 2 x 5 3 4 X 5 3x 3 4x 2 12 5 x 2 )- 4 3x 3 )=- 9x 12 12 25 x 3 5 2 3 5 4 12 5 x 3 6 12 5 x 2 4 12 x 3 )- 6 2 x 5 )- 2 2 4x 12 x 2 )+ 5 3 4x 1 )+ 3 2 12 x 3 5 4 6 x 81 Tìm x 12 3 x 4 5 2 3 3 x 4 2 5 x 4 )= 12 factorise 11 12 2 5 x 3 4
