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      Question

      The algebraic expression 25x2 +

      16y2 + 9z2 – 40xy + 24yz – 24yz – 30zx is equal to:
      A 4y + 3z – 5x)2 Correct Answer Incorrect Answer
      B (4y – 3z – 5x) (4x + 5y + 3z) Correct Answer Incorrect Answer
      C (4y + 3z – 5x) (4x 5y – 3z) Correct Answer Incorrect Answer
      D (4y – 3z – 5x)2 Correct Answer Incorrect Answer

      Solution

      The correct answer is A

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