Tìm X biết
a, ( 3x + 1 )^2 - 16( x + 1 )^2 = 0
b, 9x^3 - 12x^2 + 4x =0
c, 6x^3 - 9x^2 + 2x -3 = 0
d, 5x^3 + x^2 - 45x -9 = 0
e, 3x^2 - 5x - 8 = 0
g, 5x^2 - 26x -24 = 0
h, x^2 - 8x + 15 = 0
k, 2x^3 - 5x^2 + 2x + 5 = 0
l, x^3 + 9x^2 + 26x + 24 = 0
m, 2x^4 - 6x^3 + x^2 + 6x - 3 =0
n, x^4 + 8x^3 +...