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the difference between two terms, both of which are perfect squares, such that the factors are the sum and difference of their roots: x2 – y2 = (x + y)(x – y).
the ratio of vertical replacement to the horizontal replacement of a straight line; or the slope...
a periodic function is one that repeats after a given interval. The period is therefore the...
the sum of the areas of all the planes of a three-dimensional object.
a sequence in which each term is the sum of the previous two terms. The sequence starts 1; 1; 2...