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M34 Maths Lessons and Homework Site

Quadratic Formula and Discriminant

Friday, 15 September 2017

Lesson Objectives:

To be able to:

  • Use the quadratic formula to solve a quadratic equation giving roots as decimals or surds
  • Know that the discriminant of a quadratic expression is b2 - 4ac
  • Use the discriminant to determine how many roots a quadratic equation has.

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