The Discriminant

Example

Graph of a polynomial with the quadratic function $ f(x) = x^2 - x - 2$. Because the value is greater than 0, the function has two distinct, real zeros. The graph of shows that it clearly has two roots: the function crosses the $x$-axis at $x=-1$ and $x=2$.

Source

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"Original figure by Julien Coyne. Licensed CC BY-SA 4.0."

Julien Coyne CC BY-SA 3.0.

The Discriminant

Example

Source

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