Math Practice Online > free > lessons > California > 9th grade > Quadratic Formula
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Solve quadratic equations that equal zero using the quadratic formula.
This topic aligns to the following state standards
Grade 8: AF 20.0 Students use the quadratic formula to find the roots of a second-degree polynomial and to solve quadratic equations.
Grade 8: AF 14.0 Students solve a quadratic equation by factoring or completing the square.
Grade 8: AF 22.0 Students use the quadratic formula or factoring techniques or both to determine whether the graph of a quadratic function will intersect the x-axis in zero, one, or two points.
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