If x = (sqrt(2) + 1)/(sqrt(2) - 1) * and y = (sqrt(2) - 1)/(sqrt(2) + 1) * find the value of x ^ 2.

r s Aggarwal exercise 1f chapter 1 maths number system rs agrawal example 15 If x = (sqrt(2) + 1)/(sqrt(2) - 1) * and y = (sqrt(2) - 1)/(sqrt(2) + 1) * find the value of x ^ 2 + y ^ 2 + xy if x is equal to root 2 + 1 upon root 2 minus 1 and y is equal to root 2 - 1 upon root 2 + 1 find the value of x square + y square + xy