Mathematics
Grade10
Easy

Question

Use the product of sum and difference to find the product. 32*28

  1. 746
  2. 846
  3. 756
  4. 896

The correct answer is: 896


    Using the pattern left parenthesis a plus b right parenthesis left parenthesis a – b right parenthesis equals a squared – b squared comma
    32 asterisk times 28 equals left parenthesis 30 plus 2 right parenthesis left parenthesis 30 – 2 right parenthesis equals 30 squared – 2 squared equals 900 – 4 equals 896

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