4√150-3√54-√294+2√486

4√150 - 3√54 - √294 + 2√486
= 4.5√6 - 3.3√6 - 7√6 + 2.9√6
=20√6 - 9√6 - 7√6 + 18√6
= (20 - 9 - 7 + 18)√6
=22√6

semoga membantu yaa :)