Question

if x=2+√8 find the value of x²+1​

Answer 1

Step-by-step explanation:

13 is the answer

hope so I am not sure

Answer 2

Step-by-step explanation:

X = 2+√8

=x²+1

=( 2+√8)²+1

=[(2)²+2(2)(√8)+(√8)²] +1

= [4+4√8+8] + 1

= [12 + 4√8] +1

= [ 12 + 4 √4×2 ] +1

= [ 12+8√2] + 1

= 4[ 3 + 2√2] +1

Ans:- 4( 3+2√2)+1

Hope so the answer is correct but not sure..