-2
0
2
4
If x = (√5 + 1)/(√5 - 1) and y = (√5 - 1)/(√5 + 1), find x² + y²
Find the value of: (1 - 1/2)(1 - 1/3)(1 - 1/4)...(1 - 1/n) where n > 1
Simplify: √(5 + 2√6) + √(8 - 2√15)
If x = 3^(1/3) + 3^(-1/3), find the value of 3x³ - 9x