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Factor x^2 + 7x + 10

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Problem

The specific expression or equation this page is built around.

x^2 + 7x + 10

This is a standard quadratic factorisation pattern.

You need two numbers that multiply to 10 and add to 7.

Worked route

One structured route through this exact problem.

  1. 1List the factor pairs of 10.
  2. 2The pair 5 and 2 multiplies to 10 and adds to 7.
  3. 3So the factorisation is (x + 5)(x + 2).
  4. 4Expand the brackets again to confirm the middle term returns to 7x.
Checks worth making

Use these quick checks before relying on the route.

  • Multiply the outer and inner terms to verify the middle term.
  • Expand the full brackets to make sure you return to x^2 + 7x + 10.
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