Phân tích đa thức: 2xy - ax + x^2 - 2ay; x^3 + ax^ + x + a

2xy - ax + x^2 - 2ay
x^3 + ax^ + x + a
x^2y^2+y^3+zx^2+yz
ax^2 + ay + bx^2 - by
x^4 + 2x^3 -4x -4
x^3 + 2x^2y - x - 2y
3x^2 - 3y^2 - 2(x - y^2)
x^3 - 4x^2 - 9x + 36
x^2 - y^2 - 2x - 2y
( x - 3 ) ( x - 1 ) -3 ( x - 3 )
( x - 1 ) ( 2x +1 ) + 3 ( x - 1 ) ( x + 2 ) ( 2x + 1 )
( 6x + 3 ) - ( 2x - 5 ) ( 2x + 1 )
( x - 5 ) ^2 + ( x + 5 ) ( x - 5 ) - 5 - ( 5 - x ) ( 2x + 1 )
( 3x - 2 ) ( 4x -3 ) - ( 2 - 3x ) ( x - 1 ) - 2 ( 3x - 2 ) ( x + 1 )