4 5x 3 10 =- 1 2 July 8, 2019 16 32 64 128 5x 4 3 4x 1 3x 10 2 4 5x 1 2x 3 10 x 4 2 5x 4 3 2x 1 10 2 (- x 3 )-( 5x 10 )=- 4 1 3x )+( 8x 7 4 + 4 =5 4 - 3 + 10 รท 5 x 2
