Solving Quadratic Equations: A Number Squared Plus Itself Equals 90

This 14-minute tutorial from TabletClass Math walks through the step-by-step process of solving the quadratic equation "a number squared plus the number equals 90." Master this fundamental algebra skill that frequently appears on standardized tests like the SAT, ACT, and GED. Learn how to properly set up and solve quadratic equations, understand the methodology behind solving x² + x = 90, identify common mistakes when working with squared numbers, and develop strategies for tackling word problems that form quadratics. Perfect for high school students, college students, or adults preparing for math exams who need to strengthen their algebra skills. The video is part of TabletClass Math Academy's broader offerings, which include courses in Math Foundations, Pre-Algebra, Algebra, Geometry, Algebra 2, and Pre-Calculus.