Using Quadratic Formula To Solve Quadratic Equations - Part (III)

*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.

ALGEBRA | Factorising and Solving Quadratic Equations: The Factoring Method or Quadratic Formula (Part I)

It is a pity to see many students shying away from enjoying maths. Students often find certain topics like Algebra challenging. I’d like to identify the difference between simple and complex quadratic equations and solve them as examples. The questions are real GCSE (UK/Edexcel) exam questions. 

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 x² – 4 (difference of 2 squares) and x² + 4x + 4 can be easy. But such this work, introduced in Grade 9 or 10, often paves way for harder questions in later years. So a proper understanding is vital.

Solving Simple Quadratic Equations

More on Solving Complex Quadratic Equations

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

GCSE Foundation Maths - Sorted by Topic

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