Q: If $$ {x+{1\over x}=7}$$ then $$ {x^{2}+{1\over {x^{2}}}=?}$$ – McqOptions

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1.	Q: If $$ {x+{1\over x}=7}$$ then $$ {x^{2}+{1\over {x^{2}}}=?}$$
A.	47
B.	45
C.	49
D.	51
Answer» B. 45

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