Question

if a = 2+root 3 then the value of a in a^2- 1/a^2

Answer 1

Answer:

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Answer 2

Answer:

Given that,

a=2+3

Then, Value of

a−a1=2+3−2+31

=2+3−2+31×2−32−3onrationalize

=2+3−4−3(2−3)

=2+3−2+3

=23

Hence, this is the answer.