x2 - 4
Answer: x (x2-x)
x2 + 10y + 25 doesn't factor neatly. If that was x2 + 10x + 25, it would factor to (x + 5)(x + 5) or (X + 5)2
x2-3x-28
x2-6x can be factored into x(x-6). Simply factor out the "x" from both factors.
Assuming the question is written as: x2+11x-12 This would factor to: (x+12)(x-1)
x2 - 4
9 - x2 will factor into (3 - x)(3 + x)
Answer: x (x2-x)
(x2 + 3x + 5)(x2 - 3x + 4)
x2 + 10y + 25 doesn't factor neatly. If that was x2 + 10x + 25, it would factor to (x + 5)(x + 5) or (X + 5)2
x2-3x-28
x2-14 does factor but not pretty; it factors to: (x+sqrt14)(x-sqrt14).
(x + 7)(x2 - 7x + 49)
(x - 7)(x2 + 7x + 49)
x2-x=x(x-1)
x2 + 6x - 2 can not be factored