Mathematics GCSE
Using the quadratic formula
What Using the quadratic formula means in Mathematics GCSE, as defined for AQA.
Definition of Using the quadratic formula
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Reference: AQA
The formula x = (-b ± √(b² - 4ac)) / (2a) solves any quadratic in standard form, substituting the correct values of a, b and c including negative signs.
Topics that use Using the quadratic formula
- Solving equations and inequalities (AQA GCSE)
Related terms
- Checking solutions by substitution
- collecting like terms
- completing the square
- Convergence
- Exact surd solutions
- Factorising quadratic expressions
- Graphical representation of inequalities
- Inequality notation and direction
Using Using the quadratic formula in the exam
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