solving quadratic formula by quadratic formula and square roots

square roots

100

what is the square root of 9 

3 and -3

200

what is the square root of 192 

14 and -14

300

solve by using the square root :

 2x²+10=46

x= 6 and -6

400

what is the square root of 121?

11 and -11

500

solve by using the square root :

 (x-7)²=64

15 and -1

quadratic formula

100

solve using the quadratic formula :

-x ² +2x=1   

 

 

1

200

solve using quadratic formula :

2b²+b-91=0

x=6.5, -7

300

solve by using the quadratic formula:

x²+6x+5=0 

x=-5,-1 

400

solve using the quadratic formula: 

x²+11x-26=0 

x= 13, -2

500

solve by using the qauadratic formula:

4k²+10k-24=0 

x=1.5, -4

Discriminates

100

Tell how many solutions there are in the equation: 

7v²-v-8

225, Two solutions

200

Tell how many solutions there are in the equation: 

3v²+7+7

-35, no solution

300

Tell how many solutions there are in the equation: 

5v²+5v+5

-75, no solution 

400

Tell how many solutions there are in the equation: 

-3v²+6v-3

0, 1 solution

500

Tell how many solutions there are in the equation: 

10v²+7v+9

-311, no solution