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20-05-2016
Biology

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Show two methods of factoring ax - bx - ay + by

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20-05-2016

Way #1: ax - bx - ay + by = a(x-y) - b(x-y) = (a-b)(x-y)
Way #2: ax - bx - ay + by = x(a-b) - y(a-b) = (x-y)(a-b)

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