Quadratics Solving Quadratic Equations

Solving by Factorising

Example 1

Solving by Completing the Square

Example 2

Example 3

Solving using the Quadratic Formula

Proof

Example 4

Approximate solution using Technology Draw the graph using the graphic calculator In y= Use an appropriate window Find where the graph cuts the x-axis using 2 nd calc buttons

Example 5

Complex Roots Use the quadratic formula to solve If the number under the square root is negative treat it as an imaginary number and continu with the solution.

Example 6

This Weeks Work Page 26 Ex 1E1 Q1 – 3 Page 28 Ex1E2 Q1 – 3 Page 31 Ex 1E3 Q1, 2 Page 12 Ex 1E4 Q1, 2 Page 33 Ex 1E5 Q1, 2