In this case it is lcd x 6 x 3 now just look

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Unformatted text preview: e can’t just reuse the original list since the last number is different this time. So, here are the factors of -6 and 2. -6 : 2: ±1, ± 2, ± 3, ± 6 ±1, ± 2 Here is a list of all possible rational zeroes for Q ( x ) . ±1 = ±1 ±1 ±2 = ±2 ±1 ±3 = ±3 ±1 ±6 = ±6 ±1 ±1 1 =± ±2 2 ±2 = ±1 ±2 ±3 3 =± ±2 2 ±6 = ±3 ±2 Notice that some of the numbers appear in both rows and so we can shorten the list by only writing them down once. Also, remember that we are looking for zeroes of P ( x ) and so we can exclude any number in this list that isn’t also in the original list we gave for P ( x ) . So, excluding previously checked numbers that were not zeros of P ( x ) as well as those that aren’t in the original list gives the following list of possible number that we’ll need to check. © 2007 Paul Dawkins 269 http://tutorial.math.lamar.edu/terms.aspx College Algebra 1 3 1, 3, ± , ± 2 2 Again, we’ve already checked x = -3 and x = -1 and know that they aren’t zeroes so there is no reason to rech...
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This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.

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