2.2.5

Solve Quadratics Graphically

Test yourself

Solving Quadratics - Graphically

We can solve quadratic equations using graphs. This is useful when we can't work out the exact answer so need to estimate.

Illustrative background for ExampleIllustrative background for Example ?? "content

Example

  • Roots of a quadratic are the x values where the graph crosses the x axis.
  • The solutions for the graph shown are at +2 and -2.

Jump to other topics

1Proof

2Algebra & Functions

2.1Powers & Roots

2.2Quadratic Equations

2.3Inequalities

2.4Polynomials

2.5Graphs

2.6Functions

2.7Transformation of Graphs

2.8Partial Fractions (A2 Only)

3Coordinate Geometry

4Sequences & Series

5Trigonometry

6Exponentials & Logarithms

7Differentiation

8Integration

9Numerical Methods

10Vectors

Go student ad image

Unlock your full potential with GoStudent tutoring

  • Affordable 1:1 tutoring from the comfort of your home

  • Tutors are matched to your specific learning needs

  • 30+ school subjects covered

Book a free trial lesson