e. √5000
= √(2500 . 2) = √2500 . √2 = 50√2
f. √0,000121
= √(121 . 10⁻⁶) = √121 . √10⁻⁶ = 11 . 10⁻³
g. √0,00000324
= √(324 . 10⁻⁸) = √324 . √10⁻⁸ = 18 . 10⁻⁴
h. 9√2 + √72 - √578
= 9√2 + √(36 . 2) - (√289 . 2)
= 9√2 + √36 . √2 - √289 . √2
= 9√2 + 6√2 - 17√2