Question

xsquare + 1/xsquare=27,find x+1/x
$x$
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Answer 1

Answer:

${x}^{2} + \frac{1}{{x}^{2}} = 27$

=>

${(x + \frac{1}{x}) }^{2} - 2 = 27$

=>

${(x + \frac{1}{x} )}^{2} = 29$

=>

$(x + \frac{1}{x}) = \sqrt{29}$