Repeated root
What Repeated root means in Mathematics GCSE, as defined for Pearson Edexcel.
Definitions of Repeated root
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Reference: Pearson Edexcel
A root occurring twice in the factorisation, giving one distinct x-value where the parabola touches the x-axis.
One distinct solution that occurs twice in the quadratic factorisation; the vertex lies on the x-axis.
A root that occurs twice in the factorisation but gives only one distinct solution.
A quadratic root occurring twice in its factorisation, for example (x − 1)² = 0.
Topics that use Repeated root
- Algebra - Graphs (Pearson Edexcel GCSE)
- Algebra - Solving equations and inequalities (Pearson Edexcel GCSE)
Related terms
- completing the square
- Discriminant
- monic quadratic
- root
- Turning point
- x-intercept
- factorise
- Algebraic modelling of real-world situations
Using Repeated root in the exam
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