Question

find
the value
of x² + 1 by x2 when X=4+√15​

Answer 1

Answer:

Step-by-step explanation:

Given, x=4+√15

Now,( x^2+1)/x^2

=(x^2+1)/x^2={(4+√15)^2+1}/(4+√15)^2

=(16+8√15+15+1)/(16+8√15+15)

=(32+8√15)(31+8√15)

Answer 2

Answer:

=(4+√15)²+1/(4+√15)²

=16+15+8√15+1/16+15+8√15

=32+8√15/31+8√15