Solve quadratic equations (including those that require rearrangement) algebraically by factorising, by completing the square and by using the quadratic formula; find approximate solutions using a graph
A18-00 Introduction to Solving Quadratic Equations
A18-01 Solving Equations of the form x^2=k
A18-02 Solving Equations using the Difference of Two Squares
A18-03 Solving x^2+bx=0 by Factorising
A18-04 Solving ax^2+bx=0 by Factorising Part 1
A18-05 Solving ax^2+bx=0 by Factorising Part 2
A18-06 Solving x^2+bx+c=0 by Factorising
A18h-07 Solving ax^2+bx+c=0 by Factorising Part 1
A18h-08 Solving ax^2+bx+c=0 by Factorising Part 2
A18h-09 Solving ax^2+bx+c=0 by Factorising Part 3
A18h-10 Solving x^2+bx+c=0 by Completing the Square Part 1
A18h-11 Solving x^2+bx+c=0 by Completing the Square Part 2
A18h-12 Solving x^2+bx+c=0 by Completing the Square Part 3
A18h-13 Solving ax^2+bx+c=0 by Completing the Square Part 1
A18h-14 Solving ax^2+bx+c=0 by Completing the Square Part 2
A18h-15 Solving ax^2+bx+c=0 by Completing the Square Part 3
A18h-16 Solving ax^2+bx+c=0 by Completing the Square Part 4
A18h-17 Introducing the Quadratic Formula
A18h-18 EXTENSION Deriving the Quadratic Formula
A18h-19 Solving x^2+bx+c=0 by the Quadratic Formula Part 1
A18h-20 Solving x^2+bx+c=0 by the Quadratic Formula Part 2
A18h-21 Solving ax^2+bx+c=0 by the Quadratic Formula Part 1
A18h-22 Solving ax^2+bx+c=0 by the Quadratic Formula Part 2
A18h-23 Solving Equations of the form ax^2+bx+c=dx^2+ex+f
A18h-24 Solving Equations of the form a/(bx+c)=dx+e
A18h-25 Solving Equations of the form a/(b/x+c)=d/(e/x+f)
A18-26 Approximating Solutions to a Quadratic Equation using a Graph Example 1
A18-27 Approximating Solutions to a Quadratic Equation using a Graph Example 2