GCF
x2 + 6x
x(x+6)
x2 +3x + 2
(x + 2)(x + 1)
x2 - 25
(x-5)(x+5)
x3 - 4x2
x2(x-4)
x2 + 9x + 20
(x+5)(x+4)
x2 - 64
(x-8)(x+8)
7x4 - 21x2
7x2(x2-3)
x2 - x - 30
(x+5)(x-6)
4x2 - 16
(2x - 4)(2x + 4)
3x2 + 15x - 36
3(x2 + 5x -12)
x2 + 4x - 21
(x+7)(x-3)
16x2 -25
(4x+5)(4x-5)
26x4 + 52x3 + 169x
13x(2x3 + 4x2 + 13)
x2 + 2x - 63
(x+9)(x-7)
3x2 - 75y2
(x+5y)(x-5y)