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Q:

If $$ {a^4+1}={{a^2}\over{b^2}}{(4b^2-b^4-1)}$$,then what is the value of $${a^4+b^4}$$?

  • 1
    16
  • 2
    2
  • 3
    32
  • 4
    64
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Answer : 2. "2"

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