Difference of Squares
a2 - 49
(a+7)(a-7)
a2- 24a +144
(a-12)2
x2 + 9x + 18
(x+3)(x+6)
(a2 + 2ab + b2) - 1
(a+b+1)(a+b-1)
9x2 - 64y2
(3x+8y)(3x-8y)
100a2 +220ab + 121b2
(10a + 11b)2
x2 - 14x - 32
(x-16)(x+2)
x2 - y2 + 11x + 11y
(x+y)(x-y+11)
63a2 - 28b2
7(3a+2b)(3a-2b)
-25p2 + 10p -1
- (5p - 1)2
3 + 4x2 - 8x
(2x - 1)(2x - 3)
9 - x2 - y2 - 2xy
(3 + x + y)(3 - x - y)
(5+a)2 - 4
(a+7)(a+3)
x3 + 2x2y + xy2
x(x+y)2
x2 - 6xy - 27y2
(x + 3y)(x - 9y)
a2 - b2 + bc - ac
(a-b)(a+b-c)
(2 + 3x)2 - (1 - x)2
(1 + 4x)(3 + 2x)
(x+2)2 + 10(x+2) + 25
(x+7)2
28+13x-6x2
(7-2x)(4+3x)
x2 - 6xy + 9y2 + 7x - 21y
(x-3y)(x-3y+7)