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Modeling with one-variable equations and inequalities
By Khan Academy
Sal models a context that concerns the number and price of pizza slices. The model turns out to be a rational equation.
Modeling with one-variable equations and inequalities
By Khan Academy
Sal models a context that concerns a candy vending machine. The model turns out to be a quadratic inequality.
Modeling with one-variable equations and inequalities
By Khan Academy
Sal models a context that concerns a bank savings account. The model turns out to be an exponential equation.
Understanding inequalities and equations
By MathPlanetVideos
Margaret is paying $1,500 in rent for her apartment every month. Margaret won $12,000 in Vegas and wondering how many rent she can afford to pay with this winning?
2.3 Quadratic Equations in One Variable Part 1
By Tammy B
Solve quadratic equations in one variable.
Reasoning with Equations and Inequalities
By Khan Academy
Sal solves the equation 4x^2+40x-300=0 by completing the square.265
Absolute value inequalities | Linear equations | Algebra I | Khan Academy
By Khan Academy
This video lecture series on Worked Examples in Algebra from Khan Academy includes Solving Equations, Solving Word Problems, Solving for a variable, Absolute Value and Number Lines, Patterns in Sequences, Functional Relationships, Domain and Range, Rate Problems, Linear Functions, Slope of a Line, X and Y intercepts, Equation of a Line, Parallel Lines, Perpendicular Lines, Solving Inequalities and more...
Solving Quadratic Equations in one Variable by Factoring
By Victoriamiles
Solve quadratic equations in one variable.
Extraneous solutions to radical equations
By Khan Academy
Sal explains what square-root equations are, and shows an example of solving such an equation and checking for extraneous solutions.
DEPRECATED Extraneous solutions to rational equations
By Khan Academy
Sal solves the following equation and eliminates the resulting extraneous solution: (x^2)/(x+2)=4/(x+2).
Writing one-step equations word problems
By Khan Academy
Using information from the Super Yoga word problem, explore all the possible combinations and create equations which express the possibilities. Let's figure out which plan is best!
Writing one-step equations word problems
By Khan Academy
If you're coming to this video before seeing the previous one, back up! Otherwise, we're solving one-step equations to learn which Super Plan is the best value for our budget.