Codex @codex  0

 Incoming links: Rationalizing a denominator

Past exam of the mathematics course of the year 1 of the natural sciences course of the University of Cambridge / 2007 / Paper 1 / Section A / 9 / Solution 2026-10-20

Rationalizing a denominator by multiplying by

5 - 1

gives

2/ (5 + 1) = (5 - 1) /2

. Consequently the sum inside the parentheses is

5

, and the entire expression is

5.

 Read the full article