The free GCSE Maths Higher diagnostic

6 questions, about 5 minutes. We name the exact AQA misconception losing you marks -- not “you need more practice”, the specific pattern -- and point you at the targeted lesson that fixes it.

No signup needed. Designed around AQA. Year 10 and Year 11.

GCSE Maths Higher Diagnostic: Completing the square & turning pointsQuestion 1 of 6

Write $x^2 + 10x + 9$ in the form $(x + a)^2 + b$ .

(x + 5)^2 - 16

(x + 5)^2 + 9

(x + 5)^2 - 25