PTĐT THÀNH NHÂN TỬ 8, 3.(x-y) – 5x.(y-x) 9, x.(y-1) + y.(1-y) 10, x^3 – 2x^2 +x 11, 2x^2 + 4x + 2 – 2y^2 12, 2x – 2y – x^2 + 2xy – y^2 13, x^3 + 2x^2
PTĐT THÀNH NHÂN TỬ 8, 3.(x-y) – 5x.(y-x) 9, x.(y-1) + y.(1-y) 10, x^3 – 2x^2 +x 11, 2x^2 + 4x + 2 – 2y^2 12, 2x – 2y – x^2 + 2xy – y^2 13, x^3 + 2x^2y + xy^2 – 9x