(x-1)(x-3)
It is: (a+1)(a+3) when factored
4x + 3 doesn't factor. It is in its simplest form.
(x + 3)(x + 3)
(2x + 1)(x + 3)
(20x + 3)(1x + 1)
a(b+3)+b(b+3)
(x + 3)(7x^2 + 1)
3(x + 3)
12Y + 9 all I can see to factor out is 3 3(4Y + 3)
(4x + 1)(2x + 3)
(x+3)(x+3)
3(x2 + 3x + 1)