A quadratic equation can be solved by: Factorisation Method Completing the square method Quadratic formula All of the above.
Question
A quadratic equation can be solved by:
- Factorisation Method
- Completing the square method
- Quadratic formula
- All of the above.
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Answer
The correct option is D: All of the above.
A quadratic equation can indeed be solved using any of the following methods:
- Factorisation Method: By expressing the quadratic equation in the form of a product of two binomial expressions.
- Completing the Square Method: By transforming the equation into a perfect square trinomial on one side.
- Quadratic Formula: By applying the formula $ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} $, which directly provides the roots of the quadratic equation.
Thus, all these methods are valid for solving quadratic equations.
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