Do I need an account to practise Completing the square?

No. You can start practising Completing the square straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.

Solving quadratic equations

Completing the square

Q: What are the common mistakes in Completing the square?

Omits subtracting (b/2)^2 when completing the square Mishandles a sign when completing the square Gives only one root of a quadratic equation instead of both

Q: How many Completing the square practice questions are there?

There are 28 self-marking GCSE and IGCSE Maths questions on Completing the square, written for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Foundation and Higher and Extended tier. Each one is marked instantly and has a full worked solution.

28 self-marking GCSE and IGCSE practice questions on Completing the square, written specifically for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Foundation and Higher and Extended tier. Instant marking with full worked solutions on every question.

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Sample Completing the square questions

A few of the 28 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

Question 11 markGrade 3
A quadratic curve (opening upwards) has turning point (3, -2). For x < 3, which statement about the gradient of the curve is correct? gradient is positive, gradient is negative, gradient is zero, gradient could be any value

What are the common mistakes in Completing the square?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

Omits subtracting (b/2)^2 when completing the square
Repeated Ella's own error - added $5^2 = 25$ to complete the square but never subtracted it back out, so the constant term is unchanged instead of being reduced by 25
Mishandles a sign when completing the square
Wrote $(x - 2)^2$

Quick answers about Completing the square

How many Completing the square practice questions are there?: There are 28 self-marking GCSE and IGCSE Maths questions on Completing the square, written for AQA, Pearson, OCR, Pearson International GCSE Maths A (4MA1), Cambridge IGCSE Mathematics (0580), Cambridge IGCSE (9-1) Mathematics (0980) across Foundation and Higher and Extended tier. Each one is marked instantly and has a full worked solution.
Do I need an account to practise Completing the square?: No. You can start practising Completing the square straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.