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Learn · Quadratics

Revise it the way it's marked

Each lesson: a worked example in Ms Hammouche's step layout, one you finish yourself, the mistakes that cost marks, then exam questions. Honors “why it works” boxes and optional visuals along the way.

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Start with the warm-up8 questions, about 6 minutes. It tells you which lessons you actually need.
  1. (·)(·)Lesson 1Factoring toolkitGCF first, then the ac-method — and why grouping works. 8 min
  2. = 0Lesson 2Solving by factoringThe teacher's layout, the Zero Product Property, and word problems. 9 min
  3. iLesson 3i and square roots of negativesSimplify √−n, powers of i, products, and x² = negative. 8 min
  4. a+biLesson 4Operations with complex numbersEquality, + and −, FOIL, and dividing by the conjugate. 9 min
  5. ±√Lesson 5Quadratic Formula & discriminantThe teacher's steps, the reduction trap, and what b² − 4ac tells you. 10 min
  6. ?Lesson 6Which method?Mixed equations: decide in ten seconds, then solve. 7 min