If someone could give me a step by step explanation that would be great!

3√6

Step-by-step explanation:

if we factorize 54

54 = 2 x 3 x 3 x 3

hence

√54 = √ (2 x 3 x 3 x 3 )

= √ [ (2 x 3) x (3 x 3 ) ]

= √ (6 x 3² )

= √6 x √(3²)

= √6 x 3

= 3√6

the answer is c)8

step-by-step explanaction:

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: