Cho phân thức c 3x 2 x 9x 2 6x 1 July 8, 2019 16 32 64 128 C ^ 2 - 9x ^ 2 - 3x+ 3 x 3 = 9 1) (c - 2)(c + 2) 4) (6x - 9)(6x + 9) 3) (3x + y)(3x - y) 2) (12 - x)(12 + x)
