Question #d4732
1 Answer
Explanation:
We begin by moving everything over to one side so we are looking for zeroes of a polynomial:
We can now use the Rational Roots Theorem to find that the possible rational zeroes are all the coefficients of
This gives the following rather large list:
Luckily, we quite quickly get that
There is a negative solution to this equation as well, but it is not rational, so we cannot find it using the Rational Roots Theorem.
Using Polynomial Long Division and the fact that
Our only remaining option is to use one of the available approximation methods. Using Newton's method, we get that there is a solution around