Chapter 2 Quadratics
2.5 Discriminant
If you square any real number, the result is greater than or equal to 0. This means that if y is negative, √y cannot be a real number. For the quadratic equation f(x) = ax² + bx + c the expression b² - 4ac is called the discriminant. In this section you learn about discriminant , value of the discriminant changes with the value of k, use the discriminant to find values of a given constant
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In this section you learn about discriminant , b² - 4ac, value of the discriminant changes with the value of k, use the discriminant to find values of a given constant
Use and apply models that involve quadratic functions. In this lesson you learn about modelling with quadratics.
Modelling with Quadratics