
Intro to rational exponents | Algebra (video) | Khan Academy
We already know a good bit about exponents. For example, we know if we took the number 4 and raised it to the third power, this is equivalent to taking three fours and multiplying them.
College Algebra | Math | Khan Academy
Unit 8: Rational expressions and equations Unit mastery: 0% Rational equations Modeling with rational expressions Reducing rational expressions to lowest terms Multiplying and dividing …
Dividing rational expressions (article) | Khan Academy
A rational expression is a ratio of two polynomials. The domain of a rational expression includes all real numbers except those that make its denominator equal to zero.
Pre-algebra | Khan Academy
Identify equations from visual models (tape diagrams) Identify equations from visual models (hanger diagrams) One-step addition & subtraction equations: fractions & decimals One-step …
Equations with rational expressions (video) | Khan Academy
Video transcript - [Voiceover] So we have a nice little equation here dealing with rational expressions. And I encourage you to pause the video and see if you can figure out what …
Evaluating fractional exponents: fractional base - Khan Academy
And one way to think about it, this is going to be the same thing-- and we'll talk about this in more depth later on when we talk about exponent properties. But this is going to be the exact same …
Multi-step equations | Pre-algebra | Math | Khan Academy
Equations with parentheses Learn Equations with parentheses Multi-step equations review
Rational equations intro (video) | Equations | Khan Academy
Video transcript - [Instructor] Let's say we wanna solve the following equation for x. We have x plus one over nine minus x is equal to 2/3. Pause this video and see if you can try this before …
Algebra (all content) - Khan Academy
Solving exponential equations using properties of exponents Introduction to rate of exponential growth and decay Interpreting the rate of change of exponential models (Algebra 2 level) …
Multiplying rational expressions (video) | Khan Academy
We can factor this a squared minus 4 and we can also factor this a squared minus 1, and that'll help us actually simplify the expression or simplify the rational.