MATLAB: Get only addends of subexpression

Question

Suppose I have a symbolic expression like this

syms x x0
f=(x-x0)^3
children(f)
[(x-x0),3]

I would like to get instead

[(x-x0)^3]

How can this be done?

Answer 1

You cannot do that with children().

You need to do something like,

feval(symengine, '(V) -> if testtype(V,"_plus") then [op(V)] else [V] end_if;', f)