If a = (3 +√5)/2 then find the value of a^2+1/a^2
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Step by Step Explanation : a=23+5∴a1=3+52
On rationaliging the denominator , we get ,
a1=(3+5)(3−5)2(3−5)=9−56−25=46−25=23−5
Also,(a+a1)2=a2+a21+2
Substituting the values of a=a1
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how is it possible please give me the answer
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