Mathematics
Grade10
Easy

Question

Find the product. (3x + 2)2

  1. 9x2 + 4
  2. 6x2 + 4
  3. 9x2 + 6x + 4
  4. 9x2 + 12x + 4

The correct answer is: 9x2 + 12x + 4


    Using the pattern (a + b)2 = a2 + 2ab + b2
    (3x + 2)2 = 9x2 + 2cross times3xcross times2 + 4 = 9x2 + 12x + 4

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