Tolong d jwb ya,,,,,dgn caranya

12 / (6 + √2)
= 12 / 6 + √2) x (6 - √2)/(6 - √2)
= 12(6 - √2) / (6 + √2)(6 - √2)
= 12(6 - √2) / 6²-2
= 12(6-√2) / 36-2
= 12(6 - √2) / 34
= 12/34 (6-√2)
= 6/17 (6 - √2)