The quadratic can be written as where and are integers

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

The quadratic x2−8x+15x^{2}-8x+15 can be written as (x+m)(x+n)(x+m)(x+n) where mm and nn are integers. Which of the following correctly describes the signs of mm and nn? (a) One of mm or nn is positive and the other is negative (b) Both mm and nn are negative (c) Both mm and nn are positive (d) mm and nn are not integers (the quadratic is not factorable over integers)

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