Rational numbers

I want to make a quick note in this video because I realized that some of these ratio and rate algebraic problems can get a little bit confusing. So I just want to make sure you get the intuition...

Let's do some more work with rational expressions. So let's say I had a squared plus 2ab plus b squared and all of that is over ab squared minus a squared b. And we're going to...

Most liquids, when cooled, will simply shrink. Water, on the other hand, actually expands when it is frozen. Its volume will increase by about 9%. Suppose you have 1/3 of a gallon of water that gets...

Let's do some problems that involve subtracting fractions, or instead of saying fractions, we could say rational numbers, either way. I'll do every other of these up here....

Hello. I'm Professor Von Schmohawk and welcome to Why U. In the previous lectures, we saw that although multiplying natural numbers always produces another natural number, the result of...

Shares of stock represent how much of a company a person owns? Puff Incorporated is owned by Peter, Paul, and Mary. Peter owns 4,050 shares, Paul owns 2,510 shares, And Mary owns 42 hundred or 4,200...

- WELCOME TO A LESSON ON HOW TO USE THE 0 FEATURE OF THE TI84 GRAPHING CALCULATOR TO FIND THE REAL RATIONAL ZEROS OR ROOTS OF A POLYNOMIAL FUNCTION. THIS FIRST EXAMPLE WILL BE PRETTY STRAIGHTFORWARD,...

Let's say we we're told that the position of a particle can be figured out from, or the position of a particle as a function of time is given by this crazy expression. The position...

Let's do a little bit of practice dividing rational numbers, or another way to think about it, dividing fractions. Same thing. So we have part A. Well, number 1. Find the multiplicative...

Add the blue and pink expressions to create another expression. And be sure to combine like terms. So let me get this scratch pad out here. So we need to add this 6y plus 2 in blue. So we're...