Answer:
He used the master's devalued concepts to invest in his own education and thus get rid of the bonds of white supremacy.
Step-by-step explanation:
The concept of "master's tools" and "master's house" are linked to the concepts of Eurocentrism and white supremacy that have so oppressed and enslaved African Americans. In this concept, the "tools of the master" are the devices that the whites used to allow creating the slave system and making it strong, this system in turn was the "master's house".
Many claim that it was impossible to overcome slavery using the master's tools to destroy the master's house, but Frederick Douglass showed that it is possible. This is because when his "master" used the concepts that blacks were unable to receive education as tools, he felt motivated, to show that he was capable and that this would be the way in which he would find freedom from all the oppression that he lived and that's exactly what he did, that is, he dismantled the master's house with the master's tools.