Trinomial Factoring
D of S
Perfect squares
100

x2+7x+12

(x+3)(x+4)

100

x2-25

(x-5)(x+5)

100

x2+10x+25

(x+5)(x+5) or (x+5)2

200

x2+9x+20

(x+4)(x+5)

200

x2-49

(x-7)(x+7)

200

x2-12x+36

(x-6)(x-6) 0r (x-6)2

300

x2-5x+6

(x-2)(x-3)

300

x2-81

(x-9)(x+9)

300

4x2+12x+9

(2x+3)(2x+3) or (2x+3)2

400

2x2+7x+3

(2x+1)(x+3)

400

x2-196

(x-14)(x+14)

400

9x2-24x+16

(3x-4)(3x-4) or (3x-4)2