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2 years ago

10

Help me with this plssIf x^2+1/x^2

n%20x%2B%5Cfrac%7B1%7D%7Bx%7D%3D%3F" id="TexFormula1" title="x^{2} +\frac{1}{x^2}=10; then x+\frac{1}{x}=?" alt="x^{2} +\frac{1}{x^2}=10; then x+\frac{1}{x}=?" align="absmiddle" class="latex-formula">

1 answer:

Tju [1.3M]2 years ago

6 0

(<em>x</em> + 1/<em>x</em>)² = <em>x</em> ² + 2 + 1/<em>x</em> ² = 10 + 2 = 12

==> <em>x</em> + 1/<em>x</em> = ±√12

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