Solving Quadratics

Factor this

100

18x²-9x

9x

200

4x²+8x-12

4

300

Factor

x² -121

(x +11) (x-11)

400

Factor 

x²-25

(x+5) (x-5)

500

14x²y² + 28xy - 42x³y⁴

14xy

Factor this

100

x²+12x

x(x+12)

200

x²+6x-16

(x+8)(x-2)

300

x²-8x+7

(x-7)(x-1)

400

2x²+ 15x  +13

(2x +13  ) (x+1)

500

3x²+15x+12=0

(3x+12)(x+1)

Solve by Factoring

100

x²-4x-5=0

x=5

x=-1

200

x²+15x=0

x=0

x=-15

300

5x²+10x-40=0

x=-4

x=2

400

x²+9x+18=0

x=-6

x=-3

500

2x²+9x-5=0

x=-5

x=1/2

Solve for x

100

2x²-18=0

x=3

x=-3

200

x²-25 = 0

x= 5

x= -5

300

2x²+50=0

No real solutions

400

3x²=48

x=4

x=-4

500

3x² - 2x  -16 = 0 

(3x-8 ) (x +2) = 0 

x = 8/3

x = -2

Other

100

Is it a quadratic, linear or other

x²+6x=40

quadratic

200

FOIL

(x+3)(2x-4)

2x²+2x-12

300

FOIL

(3x+1)(2x-3)

6x²-7x-3

400

Solve for x

x²=-16

No real solutions

500

Factorise

x²-4xa+12x-48a

(x-4a)(x+12)