Videos in red are the most essential ones for that performance criterion. If none are red for a particular criterion, then all of them are essential.

2.1 Equations and Their Solutions

1. Determine whether a value is a solution to an equation.

2. Solve linear equations.
• Solving by adding or subtracting - skip if comfortable (mathispower4u)
• Solving by dividing or multiplying - skip if comfortable (mathispower4u)
• Solving two step equations (mathispower4u)
• More solving two step equations (mathispower4u)
• Solving with the unknown on both sides (mathispower4u)
• Solving an equation with parentheses (mathispower4u)
• Solving another equation with parentheses (mathispower4u)
• Solving by clearing fractions (mathispower4u)
• More solving by clearing fractions (mathispower4u)
• And yet more solving by clearing fractions (mathispower4u)
• Last one for solving by clearing fractions! (mathispower4u)

3. Add and subtract polynomial expressions.
• Adding polynomials (mathispower4u)
• Subtracting polynomials (mathispower4u)
• Adding and subtracting polynomials (mathispower4u)


4. Multiply polynomial expressions.
• Multiplying a monomial times a polynomial - watch the first three examples (mathispower4u)
• Multiplying binomials - watch the first two examples (mathispower4u)
• Squaring binomials (mathispower4u)
• Multiplying a binomial times a trinomial - watch the second example (mathispower4u)
• Multiplying polynomials - a summary (mathispower4u)

5. Factor polynomial expressions (quadratic, higher degree) by common factors or grouping.
• Factoring out a greatest common factor - watch the first example (mathispower4u)
• Factoring x² + bx + c (mathispower4u)
• Factoring differences of squares (mathispower4u)
• Factoring ax² + bx + c (mathispower4u)
• Factoring by grouping

6. Solve polynomial equations.
• Solving x² + bx + c = 0 (mathispower4u)
• Solving Quadratic equations with differences of squares (mathispower4u)
• Solving ax² + bx + c = 0 (mathispower4u)
• Solving ax² + bx + c = 0 - slightly harder (mathispower4u)
• Solving quadratic equations with common factors (mathispower4u)
• Solving polynomial equations (mathispower4u)