When in 2022, the World First Aid Day is observed?

If x = √7 + √6 and y = √7 - √6 , then the value of is (x² + y²)/(x³ + y³).

If a + (1/a) = 2, then find the value of (a⁵ + a³ + 6)/(7a – 5).

If a³ — b³ = 602 and a— b = 2, then find the value of( a² + b²)

If x = (2+√3)/(2-√3), y = (2-√3)/(2+√3)

Then find out the value of (x²+y²-xy)/(x²+y²+xy)

If x² – 10x + 20 = 0, then find the value of (x – 3)² + 1/(x – 3)²

If `x + 1/x` `= 3` ,

Given that x⁸-34x⁴+1=0, x>0. What is the value of (x³+ x^-3)?