2√98+5√128-3√162 tolong yg tau pake caranya y

2√98 + 5√128 - 3√162
= 14√2 + 40√2 - 27√2
= 27√2

2√98 + 5√128 - 3√162
= 2 (√49 . √2) + 5 (√64 . √2) - 3 (√81 . √2)
= 2 . 7√2 + 5 . 8√2 - 3 . 9√2
= 14√2 + 40√2 - 27√2
= (14 + 40 - 27)√2
= 27√2