Unit 8 Quadratics Test Review

GCF and Square Roots

100

Solve the quadratic equation by using GCF

x^2+4x=0

x=0, -4

200

Solve by using square roots. 

x^2-49=0

x=7, -7

300

Solve by applying the GCF method. 

2x^2-10x=0

x=0, 5

400

Solve by using the square root method. 

9x^2-1=80

x=3, -3

500

Solve by applying the GCF method. 

12x^2-20x=0

x=0, 5/3

Factoring

100

Solve the quadratic equation. 

(x-4)(2x-1)=0

x=4, 1/2

200

Solve by factoring.

x^2-7x-8=0

 

x=-1, 8

300

Solve by factoring. 

2x^2-17x+35=0

x=5, 7/2

400

Solve by factoring. 

x^2+12x+38=2

x=-6

500

Solve by factoring. 

3x^2-14x-7=-2

x=-1/3, 5

Quadratic Formula

100

Determine the discriminant and number of real solutions. 

x^2+18x+17=0

d = 256 ; 2 real solutions

200

Determine discriminant and number of real solutions.

x² + 3x +11 = 0

d = -35 ; 0 real solutions

300

Solve by using the quadratic formula. 

4x^2+6x-108=0

x=4.5, -6

400

Solve by using the quadratic formula. 

3x^2-11x+9=0

x=2.43 , 1.23

500

Solve by using the quadratic formula.  Leave all answer in simplified radical form, no decimals. 

9x^2+6x-20=-2

x=1.12, -1.79

Mystery :)

100

Solve the quadratic equation. 

100x^2+3=103

x=1, -1

200

Solve the quadratic equation. 

2x^2+7x+5=0

x=-5/2, -1

300

Solve the quadratic equation. 

x^2-10x-6=5

x=11, -1

400

Solve the quadratic equation. 

5x^2+6x+10=9

x=-1/5, -1

500

Solve the quadratic equation. 

7x^2+x-12=-6

x=6/7, -1