2akar150 - 3akar 54 - akar294 + 3akar 486

2√150 ₋ 3 √54 ₋ √294 + 3√486
= 2√25 x 6 ₋ 3√9 x 6 ₋ √49 x 6 + 3√81 x 6
= 2 x 5√6 ₋ 3 x 3√6 ₋ 7√6 + 3 x 9√6
= 10√6 ₋ 9√6 ₋7√6 + 27√6
= 10 ₋ 9 ₋ 7 + 27√6
= 21√6

(SEMOGA BERMANFAAT DAN MEMBANTU)