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Evaluate polynomials

Grade 8

What this lesson shows

3 x squared, plus 5 x, minus 2. Right now x is a question mark. Evaluating means someone finally tells you: x is 2. So what is the polynomial worth?

Try it yourself

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

  1. Evaluate x² + x + 1 at x = 2.
    Show answer
    7
  2. Evaluate x² + x + 4 at x = 3.
    Show answer
    16
  3. Evaluate 2x² + x + 1 at x = 2.
    Show answer
    11
  4. Evaluate 2x² + x + 3 at x = 2.
    Show answer
    13

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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