Mathematics
Grade10
Easy

Question

Find the product. left parenthesis 2 a plus 3 b right parenthesis squared

  1.  4 a squared plus 9 b squared
  2.  4 a squared plus 12 a b plus 9 b squared
  3.  4 a squared – 12 a b plus 9 b squared
  4.  4 a squared plus 12 a b – 9 b squared

The correct answer is: 4 a squared plus 12 a b plus 9 b squared


    Using the pattern left parenthesis a plus b right parenthesis squared equals a squared plus 2 a b plus b squared comma
    left parenthesis 2 a plus 3 b right parenthesis squared equals 4 a squared plus 2 asterisk times 2 a asterisk times 3 b plus 9 b squared equals 4 a squared plus 12 a b plus 9 b squared

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