Question

x-1/x=√5, find the value of 2(x^2+1/x^2)​

Answer 1

Answer:

Here is the answer.

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Answer 2

Step-by-step explanation:

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

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

$2 \times 1 + 1$

$2 + 1$

$3$

value of -1 for equation is 3

$= 2( { \sqrt{5} }^{2} + \frac{1}{ { \sqrt{5} }^{2} } )$

$2 \times 5 + \frac{1}{5}$

$= \frac{6}{5}$

$\frac{10 + 2}{10}$

$\frac{12}{10}$