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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).
a small group of people or items selected by researchers from within a larger population
writing a quadratic algebraic expression ax2 + bx + c with...
for two or more terms, a common factor is the number or variable that divides into all the terms...