Question

if x=2+√3 & xy=1 find the value of x³+y³

Answer 1

Heya friend here is your answer

Answer 2

$x = 2 + \sqrt{3} \\ xy = 1$
put the value of x to the second equation
$(2 + \sqrt{3} )y = 1 \\ y = 2 - \sqrt{3}$
now we have the value of x and y
make it square and add
${(2 + \sqrt{3}) }^{3} + {(2 - \sqrt{3}) }^{3} \\ answer \: \: \: \: 52$
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