Question

[Nguyễn Thanh Thương]

a) 3x³ +2x² - 2x -1 =0

b) x⁴ + 4x³ + 3x² + 2x -1 =0

c) x³ - 6x² + 7x + 2 =0

d) 2x⁴ + x³ - 8x² - x + 6 =0

giúp mk vs

Answer 1

[haphuong01]