Evaluating Expressions with Two Variables Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/variable-and-expressions/v/variable-expressions?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/introduction-to-algebra/variable-and-expressions/v/expressions-with-two-variables?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. ... https://www.youtube.com/watch?v=BXHNzUaIRR0 Note: All Khan Academy content is available for free at (www.khanacademy.org)

Area models for factoring expressions ... https://www.youtube.com/watch?v=m6uOqU91ypI Note: All Khan Academy content is available for free at (www.khanacademy.org)

Introduction to partial fraction expansion Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/precalculus/partial-fraction-expans/partial-fraction/e/partial_fraction_expansion_1?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Watch the next lesson: https://www.khanacademy.org/math/precalculus/partial-fraction-expans/partial-fraction/v/partial-fraction-expansion-2?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus Missed the previous lesson? https://www.khanacademy.org/math/precalculus/hyperbolic_trig_topic/hyperbolic_trig_intro/v/hyperbolic-trig-functions-and-the-unit-hyperbola?utm_source=YT&utm_medium=Desc&utm_campaign=Precalculus ... https://www.youtube.com/watch?v=S-XKGBesRzk Note: All Khan Academy content is available for free at (www.khanacademy.org)

u14_l1_t2_we3 System of Inequalities Application More free lessons at: http://www.khanacademy.org/video?v=G0fH6blRMHI Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education ... https://www.youtube.com/watch?v=G0fH6blRMHI Note: All Khan Academy content is available for free at (www.khanacademy.org)