94a
Higher tier only
Higher tier only
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55a: Changing the subject of a formula by using 1/2 inverse operations
56a: Factorising quadratic expressions (unitary coefficient of x²)
64a: Solving linear simultaneous equations by elimination
65a: Derive and solve simultaneous equations from word problems
80a: Factorise quadratic expressions with a non unitary coefficient of x² (higher tier only)
Non-linear
Simultaneous equation
Rearrange
Substitute
Solve
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