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1. You don't always have to multiply out brackets
1. You don't always have to multiply out brackets
2. Use your graphical calculator/DESMOS.com or a graphical app for a visual representation of graphs
2. Use your graphical calculator/DESMOS.com or a graphical app for a visual representation of graphs
3. Remember if e.g. x^2 = 9, x = + or - 3
3. Remember if e.g. x^2 = 9, x = + or - 3
4. SPOT Impossible cases
4. SPOT Impossible cases
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