Discriminant Worksheet and Answer Key

Objective

Students will practice evaluating the nature of the roots of a quadratic equation by using the discriminant. 25 question worksheet with answer key.

Example Questions

Given the graph below determine a) the sign of the discriminant b) the number and nature of the roots.

worksheet questions

Find the discriminant to determine the number and nature of the roots of the equation x2 + 7x + 6 = 0

Find all the values of a such that ax2 + 5x + 3 = 0 has two real roots.

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Visual Aides

Other Details

This is a 5 part worksheet:

  • Part I Model Problems
  • Part II Practice
  • Part III Challenge Problems
  • Part IV Answer Key

Resources

Download this web page as a pdf with answer key

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