Hasil dari 2√8 + 4√2 – √18 adalah?

Jawab =
2√8 + 4√2 -√18
= 2√4×2 + 4√2 -√9×2
= 2×2√2 + 4√2 – 3√2
= 4√2 + 4√2 – 3√2
= 8√2 – 3√2
= 5√2