57a
Selecting the correct factorisation for a quadratic expression, one bracket, two brackets or difference of two squares
Factorise
Quadratic
Variable/Unknown
Coefficient
Constant
Difference of two squares
63a: Solving quadratic equations by factorising (unitary coefficient of x²)
67a: Reading roots or solutions from intercepts of graphs of non-linear functions
80a: Factorise quadratic expressions with a non unitary coefficient of x² (higher tier only)
81a: Simplifying algebraic fractions by factorising then cancelling (higher tier only)
Difference between two squares
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