If x²+1/x²=23, find the value of 8x3-27y3+90xy+115

1.	If x²+1/x²=23, find the value of 8x3-27y3+90xy+115
Answer» <html><body><p>Letx - 1/x = ySQUARING BOTH SIDE'S( x -1/x )² = y²=>x² + 1/x² - 2 = y²=>y² = <a href="https://interviewquestions.tuteehub.com/tag/23-294845" style="font-weight:bold;" target="_blank" title="Click to know more about 23">23</a> - 2=>y² = <a href="https://interviewquestions.tuteehub.com/tag/21-293276" style="font-weight:bold;" target="_blank" title="Click to know more about 21">21</a>=>y = +√21ORy = -√21=>(x - 1/x) = √21OR(x - 1/x) = -√21Explanation:<a href="https://interviewquestions.tuteehub.com/tag/pls-591756" style="font-weight:bold;" target="_blank" title="Click to know more about PLS">PLS</a> MARK ME AS A <a href="https://interviewquestions.tuteehub.com/tag/brainlist-2485655" style="font-weight:bold;" target="_blank" title="Click to know more about BRAINLIST">BRAINLIST</a></p></body></html>

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