Question

jthe displacement of a body is given by x is equal to 4 + 2 raise to the power 4 the velocity of the body at any instant is what and how

Answer 1

Thank you for asking this question.  A really easy but an interesting question to ask. 

To calculate velocity we need two things that are displacement and time. In this case we have displacement at our place but we dont know at what instant. Assuming the instant to be y we can say that the velocity is equalto displacement divided by y where y is any instant.
I hope this answer can help you in some manner.