Solving Quadratics Factoring, Square Roots, & Quad Formula

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1

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Solve by Factoring: 2x^2 + 17x + 21 = 0

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x = -7, -\frac{3}{2}

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x = -8, 4

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± 8

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16

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What is the quadratic formula?

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What does the discriminant tell us about a quadratic equation?

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It indicates the nature of the roots: if >0, two real roots; =0, one real root; <0, no real roots.

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(x + 2)(x + 3)

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What is the vertex form of a quadratic equation?

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