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A quadratic expression has highest power 2 and is often written as:
x2+bx+c x^2 + bx + c x2+bx+cExpanding removes brackets to create this form, and factorising puts the quadratic back into brackets.
To work accurately, you need to recognise terms, coefficients, and like terms. Like terms can be collected only if the variable and power match, which is why the two middle terms often combine after expansion.
Question 1
2 marksExpand and simplify (x+7)(x−3)(x + 7)(x - 3)(x+7)(x−3)
In the expression 3x2−5x+73x^2 - 5x + 73x2−5x+7, which term is the constant term?
Revision notes for Edexcel GCSE Maths Expanding and Factorising Quadratics. Open the guide for explanations and worked examples. Written against the Edexcel GCSE Maths (1MA1) specification, so the content matches what's examinable rather than general Maths background.
1 of 5
Expand and simplify (x+4)(x−7)(x + 4)(x - 7)(x+4)(x−7).
