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| 1. |
If x- 1/x = 8,Find x2 + 1/x2 |
| Answer» <html><body><h2>★<u>A</u><u>N</u><u>S</u><u>W</u><u>E</u><u>R</u>♣</h2><p>62</p><p></p><p><strong>Step-by-step <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a>:</strong></p><h3>❒ <u><a href="https://interviewquestions.tuteehub.com/tag/let-11597" style="font-weight:bold;" target="_blank" title="Click to know more about LET">LET</a></u> <u>x</u> <u>be</u> <u>a</u></h3><h3>❒ <u>let</u> <u>1</u><u>/</u><u>x</u> <u>be</u> <u>b</u></h3><h2>★<u> </u><u>Acc</u><u>ording</u><u> to</u><u> the</u><u> </u><u>que</u><u>stion</u><u>:</u><u>-</u></h2><p>↦a+b=8</p><h3>❒ <u>Square</u><u> </u><u>on</u><u> </u><u>both</u><u> </u><u>the</u><u> </u><u>si</u><u>des</u><u>:</u><u>-</u></h3><p>↦(a+b)²=8²</p><p>↦a²+b²+2ab=64</p><p>↦a²+b²+2•x•1/x=64</p><p>↦a²+b²+2=64</p><p>↦a²+b²=62</p></body></html> | |