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Range - Concept 7,524 views

Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

Long division can be used to divide a polynomial by another polynomial, in this case a binomial of lower degree. When dividing polynomials, we set up the problem the same way as any long division problem, but are careful of terms with zero coefficients. For example, in the polynomial x^3 + 3x + 1, x^2 has a coefficient of zero and needs to be included as x^3+ 0x^2+3x+1in the division problem.

In your Algebra class you're going to be working with two different meanings for the word range. One word range means the output values for the possible y values of a function. Don't worry about that for now, we're talking about range as it applies to data sets or statistics. The range of a data set is the highest value minus the lowest value. It's a really useful way for looking at the spread of information and it becomes useful when you guy are making graphs. When you're making graphs you want to figure out like how many boxes do I need to skip, how much data is gong to be on my graph. So the range helps you in lots of different ways and it's easy to calculate highest value minus the lowest value.

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