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The Quadratic Formula

1) 2x² = 3x+14
2) 6x²-20=26x
3 )9x²+6x-8=0
4) 2x² + 13x+15=0
5) 2 x²+7x+6=0
6) 4x²+8x+3=0
7) x² + 3x-28=0
8) x ²-9=0
9) 5x²+10x=0
10) x² -x-12 = 0
(11) 12 x² + 7x + 1 =0 12)10x²+13x=30

2 Answers

3 votes

Answer:

x=-b+/-sqrt b^2-4ac/2a

1) x=-2 or x=7/2

2) x=-2/3 or x=5

3) x=-4/3 or x=2/3

4) x=-5 or x=-3/2

5) x=-2 or x=-3/2

6) x= -3/2 or x=-1/2

7) x= -7 or x=4

8) x= -3 or x=3

9) x=-2 or x=0

10) x= -3 or x=4

11) x= -1/3 or x=-1/4

12) x= -5/2 or x= 6/5

Explanation:

User Lloydworth
by
3.3k points
2 votes
x=-b+/-sqrt b^2-4ac/2a
1) x=-2 or x=7/2
2) x=-2/3 or x=5
3) x=-4/3 or x=2/3
4) x=-5 or x=-3/2
5) x=-2 or x=-3/2
6) x= -3/2 or x=-1/2
7) x= -7 or x=4
8) x= -3 or x=3
9) x=-2 or x=0
10) x= -3 or x=4
11) x= -1/3 or x=-1/4
12) x= -5/2 or x= 6/5
User Alex Postushnoy
by
3.8k points