← All lessons

Perfect-square trinomials

Grade 9-10

What this lesson shows

Factor x squared, plus 6 x, plus 9. You could hunt for two numbers as usual — but this one has a shape worth spotting, because it saves you the hunt entirely.

Try it yourself

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

  1. Factor x² + 2x + 1.
    Show answer
    (x + 1)²
  2. Factor x² + 4x + 4.
    Show answer
    (x + 2)²
  3. Factor x² + 6x + 9.
    Show answer
    (x + 3)²
  4. Factor x² + 8x + 16.
    Show answer
    (x + 4)²

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.

Start free