How do you factorise x² + bx + c?

Find two numbers that multiply to c and add to b, and write them as (x + …)(x + …), with signs matching.

What if the quadratic will not factorise?

Use the quadratic formula, or completing the square. Forcing ugly brackets wastes the method marks.

Is factorising 2x² + bx + c Higher?

Non-monic quadratics are Higher. Monic factorising is the shared step both tiers meet.

Factorising quadratics GCSE Maths questions

Factorising quadratics GCSE Maths questionsFactorising quadratics GCSE Maths questions, from x² + bx + c to ax² + bx + c. Find the two brackets, then solve. Original marked algebra, not a PDF.Start free GCSE Maths test · Pricing