**Unformatted text preview: **square of a binomial with integer coefficients. For example, x 2 ± 6 x + 9 has discriminant 0 and can be factored as x ± 3 ( ) 2 . • If the discriminant is not a perfect square, then the trinomial is prime over the integers . This test may be applied in Example Set 5, a) through g), which serve as review exercises for the reader. • The discriminant is denoted by ± (uppercase delta), though that symbol is also used for other purposes. It is seen in the Quadratic Formula in Section 0.11. We will discuss a method for factoring quadratic trinomials using the Quadratic Formula in Chapter 2....

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