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A quadratic equation is a polynomial equation of degree 2 in one variable of type f(x) = ax2 + bx + c. The cubic polynomials are polynomials with degree 3. a. L + … Free Algebra 1 worksheets created with Infinite Algebra 1. Algebra I: 500+ FREE practice questions Over 500 practice questions to further help you brush up on Algebra I. If we add some weight to just one side, the scale will tip on one side and the two sides are no longer in balance. Introduction to Systems of Equations and Inequalities; 7.1 Systems of Linear Equations: Two Variables; 7.2 Systems of Linear Equations: Three Variables; 7.3 Systems of Nonlinear Equations and Inequalities: Two Variables; 7.4 Partial Fractions; 7.5 Matrices and Matrix Operations; 7.6 Solving Systems with Gaussian Elimination; 7.7 Solving Systems with Inverses; 7.8 Solving Systems with … Algebra is a branch of math in which letters and symbols are used to represent numbers and quantities in formulas and equations. 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