History 13-3

This is one of the best all around sites that I have found. It is titled “The MacTutor History of Mathematics Archive.”
http://www-history.mcs.st-and.ac.uk/~history

This is an award-winning site that links to all sorts of mathematics information.
https://mathshistory.st-andrews.ac.uk/HistTopics/History_overview

Cardano:
https://mathshistory.st-andrews.ac.uk/Biographies/Cardan.html

Pascal:See the whole entry

History 6-4

This is one of the best all around sites that I have found. It is titled “The MacTutor History of Mathematics Archive.”
http://www-history.mcs.st-and.ac.uk/~history

This is an award-winning site that links to all sorts of mathematics information.
https://mathshistory.st-andrews.ac.uk/HistTopics/History_overview

Descartes:
https://mathshistory.st-andrews.ac.uk/Biographies/Descartes.html

Al-Khwarizmi:See the whole entry

History 5-2

This is one of the best all around sites that I have found. It is titled “The MacTutor History of Mathematics Archive.”
http://www-history.mcs.st-and.ac.uk/~history

This is an award-winning site that links to all sorts of mathematics information.
https://mathshistory.st-andrews.ac.uk/HistTopics/History_overview

Fermat:
https://mathshistory.st-andrews.ac.uk/Biographies/Fermat

Hilbert:… See the whole entry