CAIE IGCSE Mathematics C2.1.2 Substitution in Expressions & Formulae

Practise substituting positive or negative values into expressions with brackets, fractions and powers before evaluating accurately.

Exam points

replace each variable with its given value and preserve brackets around negatives
evaluate powers before multiplication, division, addition and subtraction
substitute known values first, then solve the resulting equation for a missing variable

[Maximum number: 1]

P=3 a+5
Find the value of P when a=2.

P=

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