can someone correct these for me plz....

Problem#36
Use Property 2 to simplify each of the following radical expressions.

Radical (10)/(49)

My answer: (radical(2 times 5))/(7)

Use the properties for radicals to simplify each of the following expressions. Assume that all variables represent positive real numbers.

Problem #42

radical (5)/(3)

My answer: (radical(15))/(3)

Problem #48

(Radical (12x^3))/(5)

My answer: (2)/(5)x radical(15x)

correct, if I follow your notation.