Question

x = √5 +2 then x -1/x equals​

Answer 1

Answer:

given x=√5-2/√5+2

and y=√5+2/√5-2

we have to find:

x²-xy+y²

Substituting values of x and y,we get:

(√5-2/√5+2)² - √5-2/√5+2×√5+2/√5-2 +(√5+2/√5-2)²

=5-4/5+4-1×1+5+4/5-4

=1/9-1/1+9/1

=73/9

Explanation:

The answer is explanation make me braniest plz