Nomer 11, 12,13,14,15,16,17,18,19 Pakai cara

11.√32-√2+√128=4√2-√2+8√2=11√2
13.√150:√3=√50=5√2
14.10/√2×√2/√2=10√2/2=5√2
15.6/√2×√2/√2=6√2/2=3√2

segitu aja kebanyakan

11. (√16×2)-√2 + (√64x2)
= 4√2-1√2+8√2
=11√2

12. 9√6 : (√4x6)
= 9√6 : 2√6
= 9 : 2 = 4 1/2

14. 10 / √2 = (10/√2) x (√2 / √2) = (10/2) √2 = 5√2

15. 6/√2 = (6 / √2) x (√2 / √2) = (6/2) √2 = 3√2