Factoring trinomials
a ≠ 1
no b
Different signs
Find the value of x
100

x2+6x+8

(x+2)(x+4)

100

2x2+7x+3

(2x+1)(x+3)

100

x2-16

(x+4)(x-4)

100

x2-5x+6

(x-2)(x-3)

100

x+5=0

x=-5

200

x2+9x+20

(x+4)(x+5)

200

2x2+5x+2

(2x+1)(x+2)

200

4x2-25

(2x-5)(2x+5)

200

x2+x-12

(x-3)(x+4)

200

2x+4=0

x=-2

300

x2+9x+14

(x+2)(x+7)

300

3x2+10x+8

(3x+4)(x+3)

300

x2-49

(x-7)(x+7)

300

x2-2x-15

(x-5)(x+3)

300

3x-6=0

x=2

400

x2+10x+21

(x+3)(x+7)

400

4x2+12x+9

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

400

9x2-1

(3x-1)(3x+1)

400

x2-x-20

(x-5)(x+4)

400

2x-3=1

x=2

500

x2+13x+42

(x+6)(x+7)

500

6x2+17x+12

(3x+4)(2x+3)

500

16x2-81

(4x-9)(4x+9)

500

x2+7x-18

(x+9)(x-2)

500
3x+1=2x

x=-1