Simplify the given radical by hand to its lowest form help please?

#4:  -18xy^3z * sqrt(z)

#5:  24xy^3 * sqrt 3(x^2)

Step-by-step explanation:

#4:  -2*sqrt(9^2 * x^2 * y^2 * y^2 * y^2 * z^2 * z)

You can cancel if there is a number sqaured

-2 * 9 * x * y * y * y * z * sqrt(z)

-18xy^3z * sqrt(z)

#5:  6 * sqrt 3( 4^3 * x^3 * x^2 * (y^3)^3 )

You can cancel if the number is cubed.

6 * 4 * x * y^3 * sqrt 3( x^2 )

24xy^3 * sqrt 3(x^2)

0.6

39mph

step-by-step explanation: