Question

$\color{red}{❌Spanners are not allowed ❌}$
$x = \frac{a}{b} + \frac{b}{a}$
$y = \frac{a}{b} - \frac{b}{a}$
then then prove that
${x}^{4} + {y}^{4} - 2 {x}^{2} {y }^{2} = 16$
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Answer 1

Answer:

answer for the given problem is given

Answer 2

Step-by-step explanation:

8+3√7. = a+b√7

this is the answer which is 8