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      Question

      Find the LCM of x² – 8x + 15 and x² – 5x + 6

      is. 
      A (x-3) (x-2) (x-5) (x-3) Correct Answer Incorrect Answer
      B (x-2) (x-5) Correct Answer Incorrect Answer
      C (x-3) (x-2) (x-5) Correct Answer Incorrect Answer
      D (x-5) (x-3) Correct Answer Incorrect Answer

      Solution

      x² – 8x + 15 =x²-5x-3x+15 =x(x-5)-3(x-5) =(x-3)) (x-5) also  x² – 5x + 6 = x²-3x-2x+6 =x(x-3)-2(x-3) =(x-2) (x-3) LCM =(x-3) (x-2) (x-5)

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