Prove this polynomial identity
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How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.
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10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.
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Tom drove 206 miles in 3.9 hours. estimate his average speed.
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Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288
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