Question

(w+9)^3+56=0 write were w i a real number write answer in simplified radical form

write b^2/3 as a radical expression

Answer 1

for the second one you have b^2 under a radical sign with an index of 3 (or root of 3)

You have some typos in the first one.. but if I am a reading it correctly.

(w+9)^3 = -56

take the cube root of both sides
w + 9 = cube root of (-56)

subtract 9.. the 9 will not be under the root.