5 2x )( 2x 7 )= 4x 2 25 July 8, 2019 16 32 64 128 4x 2 25 2x 5 2x 7 0 Tìm x 4x 2 25 2x 5 2x 7 0 2x 7 5 x 7 = 35 2 x 2 5 2x 5
