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DOPs

Difference of Perfect Squares

How to factorise a2 - b2

 

Instructions:

  1. Click on the "Show a Problem" button.
  2. Do the problem on paper.
  3. Use the hints as needed to help you correct your answer.
  4. Click on "Show the Answer."
  5. Repeat until you can do the problems easily
 

a2 - b2 is: 

 Possible factors for a2 are:

Possible factors for b2 are: 

Use these factors for a2: 

Use these factors for b2: 

The answer is: