A Level Math RevisionExam tip poster: Show that means every line (Edexcel A Level Maths)
A4 portrait. It is drawn in vector form, so it also prints sharply scaled up to A3.
The poster
The maths
A common mistake the examiners point out: "Show that": skipped steps, working back from the answer, no final line. What to do instead: Start from the question, write every line, and end with exactly the printed result. If the answer is an equation, include "= 0".