Long division of polynomials uses the same steps you learned for long division of real numbers. It might look different because of the variables but don’t worry, it’s the same thing in disguise. Let’s first review long division. Remember this? You followed a pattern of Divide, Multiply, Subtract, Bring Down.
Read MoreIn this lesson we’ll look at how to reduce rational expressions and how cancelling can be a useful technique to help us reduce them. To reduce a fraction or a rational expression there must be a common factor in all of the parts that are being added or subtracted.
Read MoreTo add rational expressions, you need to find a common denominator, just like when you add fractions in which the numerator and denominator are just numbers. The difference is that finding the common denominator of rational expressions can be more complicated because their denominators can include variables.
Read MoreWe’ll look at how to add and subtract fractions that have variables in them as well as numbers. We’ll start by finding a common denominator from the factors of each of the individual denominators.
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