Question

if a =2+√3, find the value
${a}^{2} + \frac{1}{a {}^{2} }$
PLS ANSWER THIS QUESTION​

Answer 1

Answer:

a2+√3

1/a=12+√3*2-√/2-√3

=2-√3

a^2+1/a^2=(a+1/a)^2-2

a+1/a=2+√3+2-√3=4

=(4)^2-2=16-2=14