Perfect Square Trinomials
x2 + 4x + 4
(x + 2)2
n2 - 16
(n + 4)(n - 4)
y2 - 6x + 9
(x - 3)2
y2 - 81
(y + 9)(y - 9)
4m2 + 20m + 25
(2m + 5)2
25x2 - 144
(5x + 12)(5x - 12)
121x2 - 122x + 36
(11x - 6)2
49m2 - 100
(7m + 10)(7m - 10)
64x2 + 112xy + 49y2
(8x + 7y)2
64x2 - 9y2
(8x + 3y)(8x - 3y)