Additional Mathematics Module 3 - Quadratic Equations Worksheets With Answer Key Page 11
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33Quadratic formula
Example 1
Example 2
2
2
.x
+ 5x + 2 = 0
3x
= 4x + 2
2
.a = 1, b = 5, c = 2
3x
- 4x – 2 = 0
.a = 3, b = -4 , c = - 2
2
b
b
4
ac
Using the formula x =
Using the formula
2
a
4
4
4
3
2
2
5
5
4
1
2
.x =
.x =
2
3
2
1
4
16
24
5
5
25
8
17
=
.x =
=
6
2
2
4
40
5
5
17
17
=
.x =
or
6
2
2
4
4
40
40
= - 0.438 or - 4.562
.x =
or
6
6
= 1.721 and – 0.387
Exercises 5
Solve the following quadratic equations by using the quadratic formula
2
2
1.
x
– 11x + 28 = 0
2.
–x
– 3x + 5 = 0
10
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education