E Maths Lecture Chapter 1: Solutions of Quadratic Equations.

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Presentation transcript:

E Maths Lecture Chapter 1: Solutions of Quadratic Equations

In this chapter you will learn... Solving Quadratic Equations by Factorisation Solution by Completing the Square Solution by Formula Problems involving Quadratic Equations

By Factorisation

Completing the Square Step 1 : Convert the coefficient of x 2 to 1 Step 2 : Bring c to the other side of the equation Step 3 : Add to both sides of the equation Step 4 : Factorise and simplify the equation Recall : The general form of a quadratic equation is

Practice

Imagine x 2 +22x... x x x x 11 ??

Do you understand ??

What happens if the coefficient of x 2 is not one??