Box Method
x2 + 7x + 12
(x+3)(x+4)
x2 - 4x + 3
(x - 3)(x -1)
2x - 6
2(x - 3)
x2 + 2x - 1 = 0
(x + 1)2 = 2
x2 - 6x + 8
(x - 4)(x - 2)
x2 - 7x - 8
(x - 8)(x + 1)
x2y + 2xy - 3y
y(x + 3)(x - 1)
x2 + 8x + 1 = 0
(x + 4)2 = 15
51 - 20x + x2
(x - 3)(x - 17)
x2 + 6x - 72
(x + 12)(x - 6)
3x(x + 1) - 4(x + 1)
x2 - 12x + 3 = 0
(x - 6)2 = 33
12x2 + 7x + 1
(3x + 1)(4x + 1)
x2 - (1/2)x - 3/16
(x + 1/4)(x - 3/4)
4ax - x2ax
ax(2 - x)(2 + x)
x2 + x - 8 = 0
(x + 1/2)2 = 33/4
49x2 - 14x + 1
(7x - 1)2
4x2 - 8x + 3
4(x - 1/2)(x - 3/2)
9y3x2 - 4yx4
yx2(3y - 2x)(3y + 2x)
x2 + 3x + 1 = 0
(x + 3/2)2 = 5/4