ax + ay + bx + by
x^2 - 7x + 12
20x^2 + 7x - 6
x^2 + 5x + 6
a^3 - 3a^2b + 3ab^2 - b^3
a^3 + b^3
a^2 - b^2
a^3 - b^3
a^2 + 2ab + b^2
x^4 + x^2y^2 + y^4
a^3 + 3a^2b + 3ab^2 + b^3
m^5 + n^5
a^2 + 2a
(x - 3)(x - 4)
(a - b)(a^2 + ab + b^2)
(4x + 3)(5x - 2)
(m + n)(m^4 - m^3n + m^2n^2 - mn^3 + n^4)
(a + b)^3
(a - b)^3
(a + b)^2
(a + b)(a - b)
(x + 2)(x + 3)
(x^2 + xy + y^2)(x^2 - xy + y^2)
(a + b)(x + y)
(a + b)(a^2 - ab + b^2)
a (a + 2)
