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The Brainliest Answer!
2014-09-16T19:59:22+05:30
Given (x-1/x)=5
(x-1/x)²=5²
(x-1/x)²=25
x²+1/x²-2×x×1/x=25
x²+1/x²-2=25
x²+1/x²=25+2
x²+1/x²=27
1 5 1
let the other one to complete
now
alright
thnx
its ok
  • Brainly User
2014-09-16T20:03:35+05:30
Use the formula a² + b² = [(a - b)² + 2ab].

x² + (1/x²) = [(x - 1/x)² + 2(x)(1/x)] = [(x- 1/x)² + 2] = (5² +2) = 25+2 = 27
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