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    Mathematics
    Grade10
    Easy

    Question

    Factor the trinomial to find the dimensions of the rectangle below.

    1. (5x + 3) by (x + 2)
    2. (5x + 2) by (x + 3)
    3. (x + 4) by (5x + 1)
    4. (x + 5) by (5x + 6)

    The correct answer is: (5x + 2) by (x + 3)

      5x2 + 17x + 6
      a = 5, b = 17, c = 6
      ac = 5×6 = 30
      Factors of 30 are 15 and 2.
      5x2 + 15x + 2x + 6 = 5x(x + 3) + 2(x + 3) = (5x + 2)(x + 3)

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