Factoring by S/P
x^2 +5x-6
(x-1)(x+6)
x^3+8x^2-9x
x(x-1)(x+9)
4-x^2
(2-x)(2+x)
14n^2+10n
2n(7n+5)
k^3-36k
k(k+6)(k-6)
x^2+5x-36
(x+9)(x-4) or (x-4)(x+9)
x^3-12x^2+32x
x(x-4)(x-8)
t^2-289
(t+17)(t-17)
18x^3-6x
6x(3x^2-1)
9x-225x^3
x(15+x)(15-x)
x^2-12x+20
(x-10)(x-2)
d^3+6d^2-40d
49x^2 -81
(7x+9)(7x-9)
8-4a^2
4(2-a^2)
49x^3-4x
x(7x+2)(7x-2)
x^2 +15x+50
(x+10)(x+5)
x^5-12x^3+32x
x(x+2)(x-2)(x^2-8)
169x^4-25m^2
(13x^2+5m)(13x^2-5m)
4x^4+16x^3-8x^2
4x^2(x^2+4x-2)
4f^5-169f
f(2f^2+13)(2f^2-13)
x^2-x-156
(x-13)(x+12)
x^5-13x^3+36x
x(x+2)(x-2)(x+3)(x-3)
36a^2b^4-64c^6
(6ab^2+8c^3)(6ab^2-8c^3)
10a^3b^4-6a^2b^6
2a^2b^4(5a-3b^2)
16x^5-x
x(4x^2+1)(2x+1)(2x-1)