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Q:

If for two real constants a and b the expression ax3+3x2-8x+b is exactly divisible by (x+2) and (x-2), then 

  • 1
    a = 2, b = -12
  • 2
    a = -2, b = 12
  • 3
    a = 2, b = 12
  • 4
    a = 12, b = 12
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Answer : 1. "a = 2, b = -12"

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