Mathematics 0580 · IGCSE · Functions

Functions — practice question

Take $f(x) = x^2 - 25$  $g(x) = x + 4$.
(main)[4]

Solve the equation $fg(x + 1) = gf(x)$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Therefore $x=-2.1$ oe” …

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