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Quadratic Equations

Quadratic equations are encountered regularly in real life problems, though not as frequently as linear equations.

The factorisation method of solution is used mainly in classroom problems and theoretical mathematics. The quadratic formula is usually used in real world applications.

Try the following questions to refresh your memory and check your skills. If you have any difficulty follow the underlined links for further information.

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Self-Test

Questions
1. Find the values of $x$ satisfying $2x^2=8x$.

 
2. Factorise $x^2-x-2$.
3. Factorise $x^2-9$.
4. Solve $x^2-x=6$.

5. Solve $x^2 - x-7 = 0$.