(x - 1)(x + 1)
Factor out the GCF and get X(X2-X+1).
(x-1)(x+2)
X squared plus 1 and x minus 1 ---- Actually it is the following: x3-x x(x2-1) x(x+1)(x-1)
(5 - x)(5 + x)
(x - 1)(x + 1)
x(x-1)
x(y - 1)(y + 1)
x^2(1 - x)(1 + x)
Factor out the GCF and get X(X2-X+1).
4(x - 1)(x + 1)
x^2-x+1 cannot be factorised
x(x + 2)
(x-1)(x+2)
(x2 - x + 1)(x2 + x + 1)
Here are a couple of possibilities. There are others. (x+1) and 'x' .
(x-1)(x-4)