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Khan Academy
Math: high school & college; Algebra 1; Geometry; Algebra 2; Integrated math 1; Integrated math 2; Integrated math 3; Algebra basics; Trigonometry; Precalculus; High school statistics; Statistics & probability; College algebra; AP®︎/College Calculus AB; AP®︎/College Calculus BC; AP®︎/College Statistics; Multivariable calculus ...
Algebra 1 | Math | Khan Academy
The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential models; and Quadratic equations, functions, and graphs. Khan Academy's Algebra 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience!
Algebra (video) - Khan Academy
Learn how to graph any quadratic function that is given in vertex form. Here, Sal graphs y=-2(x-2)²+5.
Parabolas intro - Khan Academy
Graphs of quadratic functions all have the same shape which we call "parabola." All parabolas have shared characteristics. For example, they are all symmetric about a line that passes through their vertex. This video covers this and other basic facts about parabolas.
Khan Academy
We can use the strategy of completing the square to solve quadratic equations. If the solutions are integers, we can solve by factoring as well.
Khan Academy
Learn about vertex form in quadratic functions and equations with Khan Academy's introductory video.
Khan Academy
The quadratic formula tells us that if we have a quadratic equation in the form ax squared plus bx plus c is equal to 0, so in standard form, then the roots of this are x are equal to negative b plus or minus the square root of b squared minus 4ac, all of that over 2a.
Linear equations, functions, & graphs | Khan Academy
This topic covers: - Intercepts of linear equations/functions - Slope of linear equations/functions - Slope-intercept, point-slope, & standard forms - Graphing linear equations/functions - Writing linear equations/functions - Interpreting linear equations/functions - Linear equations/functions word …
Quadratic equations | Algebra 2 (LBUSD pilot) - Khan Academy
Algebra 2 (LBUSD pilot) Unit 3: Quadratic equations. 2,900 possible mastery points. Mastered. Proficient. Familiar. Attempted. Not started. Quiz. ... Solve quadratic equations: complex solutions Get 3 of 4 questions to level up! Strategizing to solve quadratic equations. Learn. Strategy in solving quadratic equations (Opens a modal)