Câu 1: GTP a) (x – 1)(x2 + 3x – 2) – (x3 – 1) = 0. b) 2x3 + 6x2 = x2 + 3x c) (3x – 1)(x2 + 2) = (3x – 1)(7x – 10). d) (3x - 2)(4x + 5) = 0 e) (2,3x - 6,9)(0,1x + 2) = 0 f) (4x + 2)(x2 + 1) = 0 g) (2x + 7)(x - 5)(5x + 1) = 0h) 3x – 2 = 2x – 3i) 3 – 4u + 24 + 6u = u + 27 + 3uj) 5 – (x – 6) = 4.(3 – 2x)k) -6(1,5 – 2x) = 3(-15 + 2x)l) 0,1 – 2(0,5t – 0,1) = 2(t – 2,5) – 0,7Phân tích đa thức P(x) = (x^2 – 1) + (x + 1)(x – 2) thành nhân tử.