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Q:

यदि $$ {x+{1\over x}=7}$$  है तो $$ {x^{2}+{1\over {x^{2}}}=?}$$ का मान होगा?

  • 1
    47
  • 2
    45
  • 3
    49
  • 4
    51
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Answer : 1. "47"

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