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Discriminant & # of solutions

Grade 10

What this lesson shows

x squared plus 4 x plus 6 equals zero. Before you spend any time solving it, you can find out whether it HAS a solution at all.

Try it yourself

Real questions from this lesson's worksheets — answers below each one.

  1. Find the discriminant of x² + x + 1
    Show answer
    -3
  2. How many real solutions does x² + x + 1 = 0 have?
    Show answer
    0
  3. Find the discriminant of x² + x + 2
    Show answer
    -7
  4. Find the discriminant of x² + 2x + 1
    Show answer
    0

Practise this every day

Eduyro gives your child a short daily worksheet on exactly this skill, and moves them on only once they have it. Watch the lesson, then build the fluency.

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