Solving Quadratic Equations

Square Roots

100

k²=16

x= -4, x=4

200

2n²=-144

No Real Solution

300

n²-5=-4

x=-1,x=1

400

2k²-2=144 

(round your answer to the nearest hundredth)

x=-8.54, x=8.54

500

2m²+10=210

x=-10, x=10

Factoring

100

(k+1)(k-5)=0

x=-1,x=5

200

n²+7n+15=5

x=-5,x=-2

300

n²-10n+22=-2

x=4,x=6

400

6n²-18n-18=6

x=-1,x=4

500

7r²-14r=-7

x=1

Completing the Square

100

x²+6x+8=0

x=-4, x=-2

200

a²+14a-51=0

x=-17,x=3

300

n²=18n+40

x=-2, x=20

400

5k²=60-20k

x=-6,x=2

500

1x²-5x=0

x=0, x=5

Quadratic Formula

100

m²-5m-14=0

m=-2,m=7

200

b²-4b+4=0

x=2

300

2x²-3x-5=0

x=-1,x=2.5

400

4b²+8b+7=4

x=-1.5,x=-0.5

500

5r²=80

x=-4,x=4

Mixed Review

100

x²-49=0

x=-7,x=7

200

3x²-75=0

x=-5,x=5

300

(x+8)²=36

x=-14, x=-2

400

x²+20x+28=9

x=-19,x=-1

500

5n²-2=-92

No Real Solution