This is a topic under mathematics.
Sub topics: cubic-equations, Quadratic Equations
Introduction to Algebra
edx.orgIntro Algebra Review
udacity.comCommutative Algebra
onlinecourses.nptel.ac.inÁlgebra Básica
canvas.netCollege Algebra
modernstates.orgPre-Algebra
coursesites.comCollege Algebra Prep
canvas.netA-level Mathematics for Year 12 - Course 1: Algebraic Methods, Graphs and Applied Mathematics Methods
edx.orgIntroduction to Commutative Algebra
onlinecourses.nptel.ac.inVisualizing Algebra
udacity.comCollege Algebra and Problem Solving
edx.orgCollege Algebra
udacity.comCollege Readiness Math MOOC
opencourses.desire2learn.com