There are many ways to solve quadratic equations, which includes:
- use of quadratic formula
- factorisation (‘Cross method’)
- graphical method
- ‘Completing the Square’
‘Completing the Square’ is a very tedious method to solve quadratic equation. This method is usually introduced to the students in Secondary 3. Students are advised to use this method only if the question specifies that this method must be used. After using this method, students are advised to verify their answer by the use of other methods, preferentially by using the quadratic formula.
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