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This document provides instructions for factoring the trinomial X^2 + 7x - 18. It shows that this trinomial can be factored into the form (x - 9)(x + 2), with the first term (x - 9) representing the zero of the parabola where x = 9, and the second term (x + 2) representing the other zero where x = -2. The steps for factoring the trinomial into this form are not shown.