When using the built-in fsolve function to find the roots of a polynomial, how does exponentiation occur? For example, x³ is found​​​​​​first, and then to find x⁴, will he start again from the beginning, that is, x*x*x*x, or will he take the value of x³​​​​​​ and multiply by x? The teacher is interested in finding out this, but I don't know how to find out myself.