Question

if a =2 +under root 3 ,find the value of a power 2 - 1 by a power 2​

Answer 1

Step-by-step explanation:

hope it helps........

Answer 2

Step-by-step explanation:

To find the Value of a²+1/a²

given that a=2+√3

so we will simply substitute a in the given equation

(2+√3)²+1/(2+√3)²

=4+3+4√3 + 1/4+3+4√3

=7+4√3+1/7+4√3

now taking LCM

49+48+28√3 +28√3 +1 /7+4√3

98+56√3/7+4√3

Hope if the answer is more simplified u could do it

Thank you

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