1, x^6 - y^6
2, x^3 - 9x^2 + 11x - 21
3, y(x-2z)^2 + 8xyz + x(y-2z)^2 - 2z(x+y)^2
4, x^2y + xy^2 + x^2z + xz^2 + y^2z + yz^2 + 2xyz
5, ( x^2 + y^2 )^3 + (z^2 - x^2 )^3 - ( y^2 + z^2 )^3
6, ( x+y+z)^3 - x^3 - y^3 - z^3
Phân tích đa thức thành nhân tử
1, 4x2 - 13x + 9
2, 5x2 + 17x + 12
3, x2 - 3x - 10
4, x2 + x - 12
5, x3 + 5x2 + 3x - 9
6, x3 - 7x + 6
7, x5 - 5x3 + 4x
8, 4x4 - 21x2y2 + y4
9, 2a2b + 4ab2 - a2c + ac2 - 4b2c + 2bc2 - 4abc
10, 8x3(y+z) - y3(z+2x) - z3(2x-y)