-x ൻ്റെ റിസിപ്രോക്കൽ 1+x ആണെങ്കിൽ, ഏത് സംഖ്യയാണ് x?

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If the reciprocal of 1-x is 1+x, then what number is x ?

A√2

C1+√2

D1-√2

Answer:

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