Additional Mathematics Module 3 - Quadratic Equations Worksheets With Answer Key Page 4
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332.2
GENERAL FORM
2.2.1 Identifying
Example 1
Example 2
4x + 3 = 2x
x(x + 5) = 7
2
2x + 3 = 0
x
+ 5x - 7 = 0
The highest power of variable x is 1
The highest power of variable x is 2
Therefore 4x + 3 = 2x is not a quadratic
Therefore x(x + 5) = 7 is a quadratic
equation
equation
Exercises 1
Identify which of the following are quadratic equation
5
1. 3 =
.2.
x(2x + 3) = x - 7
x 2
2
3. ( x + 4 )(2x – 6) + 3 = 0
4. (3m + 5)
= 8m
2
2
5. x (7 - 2x + 3x
) = 0
6. 3x
– 5 = 2x( x + 4)
3
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