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Grade 9Algebraic ThinkingOriginal practice

Factoring Quadratics Worksheet: Roots 5 and 8 — Grade 9

Grade 9 factoring quadratics practice on roots 5 and 8. Five tasks with matching answers, teacher guidance, and Letter/A4 printing. Save as PDF from the print window.

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Page layout

0 practice pages · 0 answer pages. Pages are added automatically when needed. Question content and answer keys stay together.

Ready to teach

Ages 14-15 · About 30 minutes · Independent practice

What students will do
Factor a quadratic, find both roots, and verify a solution.
Age and response support
Read the short model first. Allow oral rehearsal, then request a calculation, text detail, or explicit criterion appropriate to the task.
Before assigning
Print student pages separately from answers. Read the scenario and model assumptions before assigning. No external account, equipment, or audio is needed.
Materials
Pencil
Sheet 3B66D5BF · questions and answers share this ID

About this practice

Grade 9 · Mathematics · Matching answer key included · US Letter and A4

Choose “Save as PDF” in your browser’s print window to keep a copy.

Teaching guide, sample answers and curriculum references

Before you begin

Read or listen to the model and identify what the task asks before responding.

How to use this worksheet

  1. Find the sum of the two positive root candidates.
  2. Find the larger root.
  3. Check the smaller root by substitution into x² − 13x + 40.

A common mistake to discuss

25 − 65 + 40 = 0.

What to practice next

Create a different example that preserves the learning goal, and explain how you would check it.

Published 2026-10-23; updated 2026-10-23. Read our editorial policy.

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