Question

If x = 5 – 2V6 , then find the value of x² + 1 - 2
​

Answer 1

Answer:::48 - 20V6

Explanation:

Here,

x= 5 - 2V6

Now,

x^2 +1-2

= (5 - 2V6) ^2 +1 - 2

= 5^2 - 2*5*2V6 + (2V6)^2 +1 - 2

= 25 - 20V6 +4*6 +1 - 2

= 25 - 20V6 +24 +1 - 2

= 25 +24 +1 - 2-20V6

= 48 - 20V6