Exam-Style Revision

The final lesson consolidates the whole course into an exam-ready routine.

Marks live in the working:

1. Show the rearrangement to standard form.
2. Name or show the method (factors, roots, formula).
3. Give both roots for quadratics; state rejections with reasons.
4. Check by substitution — silently for yourself, always.

Time budget (CAPS paper rhythm): linear ≈ 2–3 marks / 3 minutes; quadratic by factorising ≈ 3–4 marks; formula questions ≈ 4–5 marks. If a factor-hunt exceeds ~40 seconds, switch to the formula — it earns the same marks.

The classic mark-losers, one last time: dividing by $x$ (lost root) · forgetting $\pm$ (lost root) · sign slip in $-4ac$ · answering the equation but not the question ("find the width" wants metres, not just $x$).