x2 - 4
x3 + x2 + 4x + 4 = (x2 + 4)(x + 1)
x2 - 4x - 32 = (x - 8)(x + 4)
x(x - 4)
x2+4x-32 = (x-4)(x+8) when factored
6
4
y = x2 - 4x + 4 can be factored into y = (x-2)(x-2) The repeated factor is 2.
If that's +4x, the answer is (x - 4)(x + 8) If that's -4x, the answer is (x + 4)(x - 8)
-3
x2 + 4x + 6 can not be factored. If you want, you can reduce it to an expression with a single x term by comleting the square: x2 + 4x + 6 = x2 + 4x + 4 + 2 = (x + 2)2 + 2
(x+4) (x+6)