A18a Part 2 video 1 of 3 Solving quadratic equations where some rearrangement is required

A video on solving quadratic equations by factorising, where we first do some rearranging to ensure we have zero on one side of the equation.

00:00 Introduction
00:24 Example 1 Solve x² + 9x = –20
02:39 Example 2 Solve x² = 21 – 4x
04:12 Example 3 Solve 2x² + 12 = x² + 8x
05:32 Example 4 Solve x² + 3x + 1 = –6x + 1