Question

if x is equal to 2+ √3 then value of x power 2 + 1 by x power 2​

Answer 1

Answer:

8

Step-by-step explanation:

x is equal to 2+ root 3 then 1/x will be equal to 2-root 3(rationalising the denominator)

x²=(2+root 3)²

1/x²=(2-root 3)²

x²+1/x²= (4+3)+ (4-3)

=7+1

=8