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Q:

What is the product of (x + a) and (x + b)?

  • 1
    x2+(a-b)x+ab
  • 2

    x2+(a-b)x-ab

  • 3

    x2+(a+b)x+ab

  • 4

    x2+(a+b)x-ab

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Answer : 3. "

x2+(a+b)x+ab

"

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