Paper 5 June 2025 Higher tier, Question 20 4 marks
Reveal mark scheme
OCR GCSE Maths
Topic questions Pure mathematics Rational expressions
13 questions · 64 marks · about 1 hour
Write as a single fraction in its simplest form.
Simplify fully.
x3 + 83x2 + 15x x - 9x
Here are two pieces of work.
Each shows a question and the first line of an incorrect solution.
For each part, describe the error made in the first line of the solution. You do not need to complete the solution.
Write as a single fraction in its simplest form.
Write as a single fraction in its simplest form.
Simplify.
Write as a single fraction in its simplest form.
Show that +
can be written in the form
, where a is an integer.
Simplify.
x + 3
x - 4
x + 5
is identical to x3 + ax2 - 17x + b.
Find the value of a and the value of b.
Simplify.
Write as a single fraction in its simplest form.
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