Tìm x biết a) ( 3x + 1 ) ( 3x – 1 ) – ( x – 2 ) ( x^2 + 2x + 4 ) = x (6 – x^3) b) 5x ( x – 3 )^2 + 5 ( x – 4 ) ( x + 4 ) – 5x^3 = -5x ( 6x – 1 ) c)
Tìm x biết a) ( 3x + 1 ) ( 3x – 1 ) – ( x – 2 ) ( x^2 + 2x + 4 ) = x (6 – x^3) b) 5x ( x – 3 )^2 + 5 ( x – 4 ) ( x + 4 ) – 5x^3 = -5x … Đọc tiếp