= √121 × √0,000001
= 11 × 0,001
= 0,011
g. √0,00000324
= √(324 × 0,00000001)
= √324 × √0,00000001
= 18 × 0,0001
= 0,0018
h. 9√2 + √72 – √578
= 9√2 + √(36 × 2) – √(289 × 2)
= 9√2 + √36 × √2 – √289 × √2
= 9√2 + 6√2 – 17√2
= (9 + 6 – 17)√2
= –2√2
i. 7√3 + √48 – √768