pliiis jwb dgn caranya

Penyelesaian:

2√150 - 3√54 - √294 + 3√486
= 2√25.2 - 3√9.6 - √49.6 + 3√81.6
= 2.5√2 - 3.3√6 - 7√6 + 3.9√6
= 10√2 - 9√6 - 7√6 + 27√6
= 21√6