√3(3√6-2√3)=? berapakah hasilnya?

Soal
= √3(3√6)-√3(2√3)
= 3√3x6 - 2√3x3
= 3√18 - 2√9
= 3√18 -2(3)

= 3√18-6

⇒√3(3√6-2√3)
⇒3√18 - 2√9
⇒3√9.2 - 2.3
⇒3.3√2 - 6
⇒9√2 - 6