2 dibagi 1-1/2 akar 2

2 / 1 - 1/2√2
= 2 (1 + 1/2√2) / (1 - 1/2√2)(1 + 1/2√2)
= 2 (1 + 1/2√2) / (1 - 1/4(2))
= 2 (1 + 1/2√2) / 1 - 1/2
= 2 (1 + 1/2√2) / 1/2
= 4 (1 + 1/2√2)
= 4 + 2√2