The problem states that $m=4$ is the solution to a given radical equation. The problem asks to find the "mature" of the roots of the equation. I assume "mature" means the nature of the roots, such as whether they are real or complex. However, since we don't have the radical equation, we cannot determine the nature of roots of the equation. From the previous line we know that $m=4$ is a solution. It can be assumed that the author meant to ask the nature of the root $m=4$.

1. Problem Description

The problem states that $m=4$ is the solution to a given radical equation. The problem asks to find the "mature" of the roots of the equation. I assume "mature" means the nature of the roots, such as whether they are real or complex. However, since we don't have the radical equation, we cannot determine the nature of roots of the equation. From the previous line we know that $m=4$ is a solution. It can be assumed that the author meant to ask the nature of the root $m=4$.

2. Solution Steps

Since we are given that $m=4$ is a solution to the radical equation, we need to determine the nature of this root.

Since $m=4$ is a real number, the root is real.

3. Final Answer

The nature of the root is real.