*The Quadratic Formula can be used to
solve any Quadratic equation. But, students must know how to use it; they must
know values of

*a, b, & c*; know their directed numbers; and know how to simplify surds.
Showing posts with label **factorising**. Show all posts

Showing posts with label **factorising**. Show all posts

*The Quadratic Formula can be used to
solve any Quadratic equation. But, students must know how to use it; they must
know values of* a, b, & c*; know their directed numbers; and know how to
simplify surds.

To solve a quadratic equation (equation of the
highest power of 2), one MUST first know how to factorise the equation.

Factorising and solving simple quadratic expressions (and
equations) like *x*^{2} – 4 (difference of 2 squares) and *x*^{2}
+ 4x + 4 can be easy.

But such this work, introduced in Grade 9 or
10, often paves way for harder questions in later years.

See the illustrations below on how to solve quadratic equations. You can relate these examples to the questions your teachers set for you.

The factoring method is introduced early in Year 7 and covered extensively in the later years at secondary schools.

Find out either to Factorise and solve or use the Quadratic formula in Part (II)

You can download the past **GCSE exam papers online**. Here are some websites that many students prefer to use.

- Maths Genie
- Maths Watch
- Dr Frost maths
- Cobette Maths
- GCSE maths in four weeks

Stationery items you will need for exams are available at Ryman: GCSE maths stationery items

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