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Prove that for all integer m and n, if m-n is even then m^3-n^3 is even.
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Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?
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Two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: what is the approximate distance, in feet, between the two poles? 6.93 feet 8.66 feet 12.32 feet 15.59 feet
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Prove that for all integer m and n, if m-n is even then m^3-n^3 is even....
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