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← 1.1 Quadratic Expressions and Equations

Building a quadratic

Mathematics · Grade 11 · about 40 minutes

Form x^2 - (sum)x + product = 0 from two roots, and form a quadratic from a rectangular area, rejecting a negative length.

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Other lessons in this sub-strand

  1. Perfect-square quadratics
  2. Completing the square
  3. Roots by completing the square
  4. Completing the square when a is not 1
  5. Deriving the quadratic formula
  6. The discriminant
  7. Using the quadratic formula
  8. A line and a quadratic together
  9. Building a quadratic
  10. Quadratics in a story