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Name _____________________________
Date ___________________

Quadratic Equations
(Answer ID # 0130975)
Use the quadratic formula to solve each equation.

1.   4x2 + 5x - 1 = 0
2.  
-44
1

5
x2 - 17x  =  
-20
2

5
x2 - 
23
4

5
3.  
3

5
x2 - 
4

5
x  =  
1

5
4.  
3x2  =  -15x + 12
5.  
2x2 + 
3
2

3
x + 3  =  
2
2

3
6.  
-4

5
x2 - 
2
1

5
x + 
1
4

5
  =  
-1

5
7.   -3x2 - 12x + 2 = 0
8.  
5x2 + 9x + 4  =  0
9.  
5x2 + 10x - 40  =  0
10.  
-1

2
x2 - 
1
1

2
x + 2  =  0
11.  
-11x2 - 20x  =  -4x2 - 9x - 5
12.   -10x2 - 5x + 11 = 0
13.  
12x2 + 3x  =  9
14.  
2
1

2
x - 
1
1

4
  =  -10x2
15.   6x2 - 7x - 4 = 0

 

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