if x + 1/x =7 then find 1/x+x
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the appropriate answer will be 7
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Question: if x + 1/x =7 then find 1/x+x
To find: Value of 1/x+x
Answer:
It is given that x+1/x=7. ....(1)
On squaring both side,
(x+1/x)²=x²+1/x²+2×x×1/x
(7)²=(x+1/x)²-2
49+2=(x+1/x)²
51=(x+1/x)²
√51=x+1/x
Hence, 1/x+x=√51
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