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Rearranging formulae requires students to change the subject of an equation, using the same inverse-operation skills as solving equations but with multiple variables. Higher-tier questions involve subjects that appear twice or under roots and powers.
Our tutors see these errors again and again. Knowing them in advance gives you a head start.
Performing inverse operations in the wrong order
Forgetting to square both sides when the subject is under a square root
Not factorising when the new subject appears in multiple terms
This topic is tested by the following exam boards. Our tutors are specialists in each one.
Linear equations are one of the most frequently tested algebra topics at GCSE level. Students must isolate the unknown variable by applying inverse operations, handling brackets and fractions along the way.
AlgebraAlgebraic fractions combine fraction skills with algebraic manipulation and are tested at higher tier. Students must simplify, add, subtract, multiply and divide fractions that contain variables, often needing to factorise first.
AlgebraFunction notation is a higher-tier topic that formalises the input-output relationship. Students evaluate, combine, and find inverses of functions, building skills that are directly extended at A-Level.
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Take our free diagnostic quiz to find out exactly where you stand, then get matched with a tutor who specialises in algebra.